阅读说明：本技术 一种防治芋艿烂芋皮病的方法 (Method for preventing and treating taro rotten taro skin disease ) 是由 谢昀烨 王健康 梁俊 武军 方丽 王汉荣 盛先俏 于 2021-05-08 设计创作，主要内容包括：本发明提供了一种全新的防治芋艿烂芋皮病的方法,主要采用42.8％氟菌·肟菌酯悬浮剂或41.7％氟吡菌酰胺悬浮剂,并添加除虫菊提取物,进行土壤消毒、种芋处理和药液灌根,减少芋艿上的粪棘跳虫的虫口密度,从而实现对芋艿烂芋皮病的防治。本发明所述方法能更高效、用量更低、更环保地防治芋艿上粪棘跳虫的危害,降低芋艿烂芋皮病的发生,保障了农民的利益,经济社会生态效益显著。另外,本发明还公开了42.8％氟菌·肟菌酯悬浮剂或41.7％氟吡菌酰胺悬浮剂和除虫菊提取物的混合物用与制作芋艿等农作物的粪棘跳虫防治剂的用途。(The invention provides a brand-new method for preventing and treating taro rotten taro skin disease, which mainly adopts 42.8 percent of fluobacterium trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent, and adds pyrethrum extract to perform soil disinfection, seed taro treatment and liquid medicine root irrigation, thereby reducing the population density of dung-spine springtail on taro and further realizing the prevention and treatment of taro rotten taro skin disease. The method disclosed by the invention can be used for preventing and treating the damage of the coprinus ocellatus on the taro more efficiently and more environmentally, the occurrence of the taro rotten taro skin disease is reduced, the benefits of farmers are guaranteed, and the economic, social and ecological benefits are obvious. In addition, the invention also discloses the application of the mixture of 42.8 percent of fluoxastrobin-trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent and pyrethrum extract in preparing the coprostachys springtail control agent of crops such as taro and the like.)

1. A method for preventing and treating taro rotten taro skin disease and reducing the population density of dung thorn beetles on taros is characterized by comprising the following steps:

1) before planting, adopting 42.8 percent of fluorine bacterium-trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent, adding pyrethrum extract, and spraying the mixture on the ground for soil disinfection;

2) adopting 42.8 percent of fluorine bacterium trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent, adding pyrethrum extract, soaking the seeds with taro, draining the liquid medicine and sowing the seeds;

3) and (3) performing seedling emergence or growth period of the taros, and irrigating roots by using 42.8 percent of fluobacterium trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent and adding pyrethrum extract.

2. The method of claim 1, wherein the 42.8% fluoxastrobin trifloxystrobin suspending agent is diluted 2000-fold.

3. The method of claim 1, wherein said 41.7% fluopyram suspension is diluted 5000-fold.

4. The method of any one of claims 1-3, wherein the pyrethrum extract is diluted 1000-fold.

5. The method according to any one of claims 1 to 4, wherein the amount of the liquid medicine used for irrigating the roots in step 3) is 450 kg per acre or 200ml per plant.

6. The method as claimed in any one of claims 1 to 5, wherein the root irrigation time in step 3) is twice a year, the first time is the emergence period of the seed taro, and the second time is the 4-5 leaf period of the taro.

7. The method according to claim 6, wherein the root irrigation time of the liquid medicine is 4 days in the middle of the month for the first time and 6 months in the beginning of the second time.

8. The application of the mixture as a control agent for the acanthopanax senticosus of crops is characterized in that the mixture comprises 2000 times of 42.8 percent of fluoxastrobin trifloxystrobin suspending agent and 1000 times of pyrethrum extract.

9. Use of a mixture as a control agent for acanthopoda coprostasis of crops, wherein the mixture comprises 5000 times of a 41.7% fluopyram suspension and 1000 times of a pyrethrum extract.

10. Use according to claim 8 or 9, wherein the crop is a taro.

Technical Field

The invention belongs to the field of plant disease and insect pest control, and particularly relates to a method for controlling dung thorn springworms on taros.

Background

The taro (Colocasia esculenta (L.) school) is called taro for short, and is commonly called taro. Native China and tropical regions such as India and Malaysia; monocotyledonous, Araceae, perennial herbs. Oval shape, long and large petiole, yellow-green flower; the underground has fleshy corms, is rich in starch, can be eaten and is rich in nutrition. The tuber of the plant protein-rich dietary fiber contains 1.75-2.3% of protein, 69.6-73.7% of starch, 1.17-1.68% of ash, 0.47-0.68% of lipid, 0.059-0.169% of calcium, 0.113-0.274% of phosphorus, 0.0042-0.0050% of iron and B, B2 (namely riboflavin) which is rich in vitamins. Recorded in Yunnan herbal medicine that taro mainly widens intestines and stomachs, swallows for promoting appetite, unblocks intestines and smoothes middle energizer; it has effects of nourishing liver and kidney, replenishing essence and nourishing marrow after long-term administration.

The springtail is a hexapod of the order of Colletotricha (Collembola), has no wings for a lifetime, is dark gray in body, has a springtail, is oily on the body surface, is water-proof, and can float on the water surface when water is accumulated. The springtail takes putrid animal and plant debris, humus, bacteria and fungi as main foods, can participate in soil substance circulation, improve soil fertility, improve soil physicochemical characteristics and maintain soil biological communities. There are many kinds of springtails, and there are reported to be green round springtails (smithhurus viridis), yellow star round springtails (Bourletiella pruinosa), purple springtails (hypastrura cornuis), and thorn springtails (Onychiurus sp). The fecal spine skipper (Onychiurus fisetinayius) belongs to the wet and rotten fondness, can be found in places with dark and damp shade and humus, can damage underground tuber parts of economic crops such as lily, gastrodia elata, taro and the like, and only found in Hunan seining in the past can damage the taro. In 2017, 8 months, the harmful springworms are also found in Yongkang city of Zhejiang province and have serious harm to underground corms of taros, and through investigation, the harm can reach over 40 percent, the corms are continuously harmed in the storage period, and the yield and the value of the taros are seriously influenced. The taro damaged by the dung spine jumps does not have obvious damage symptoms at the early growth stage, the plants can have the symptoms of yellow and short plants when the taro is damaged at the middle growth stage, the taro damage is obvious in shape under the high-temperature and high-humidity environment, the wilting disease resistance of stems is reduced, the plants are easily infected by epidemic diseases and anthracnose in a taro field, the whole plant of the taro plant is promoted to rot, and the underground corm part is completely rotten. The fecal spine springtail mainly damages the underground corm part of taro, adults gnaw the surface of the corm to form a cavity, taro is rotten and hollowed out when being serious, no edible part exists, and the taro loses growth capacity completely, so that taro farmers call the serious diseases of rotten taro skin, and the rotten taro skin is rapidly expanded and increasingly serious. The rotten taro skin not only affects the yield, but also seriously affects the appearance and quality of taro.

The characteristics and prevention and control technology of taro field thorn jump insect (Chinese plant protection introduction, 2005(8): page 19-20) mention that phoxim and beta-cypermethrin can be used for preventing and controlling the coproak jump insect harm of taro, and that phoxim and beta-cypermethrin are used as broad-spectrum insecticides, have high toxicity and great harm to the environment, and are easy to cause the crop pests to generate drug resistance. Therefore, a method for preventing and controlling the coprostasis jumps on the taro, which is more efficient, lower in dosage and more environment-friendly, is urgently needed to be found.

The 42.8% fluorine bacterium trifloxystrobin suspending agent (Lunason) is a high-efficiency bactericide, is a compound agent of fluopyram and trifloxystrobin, can inhibit fungal spore germination, bud tube elongation, hypha growth and spore production, and has no cross resistance with other bactericides and even bactericides with the same action mechanism. The 42.8 percent of fluoxastrobin and trifloxystrobin suspending agent has outstanding control effect on various diseases such as cucumber target spot, tomato leaf mold, watermelon gummy stem blight, pepper anthracnose and the like.

The 41.7% fluopyram suspending agent (Lufuda) is a nematicide, has the characteristics of high efficiency, low toxicity and low dosage, can effectively solve the trouble of nematodes to farmers, and helps the farmers to produce fruit and vegetable products with higher quality and higher yield.

Pyrethrum is a perennial herb of the genus pyrethrum, and inflorescence contains pyrethrin, archen (jaceeidin), apigenin, luteolin, stilben-7-galacturonic acid methyl-stem ether, apigenin-7-glucuronic acid, sesquiterpene lactone: [ Tarridin A (tarridinA), Tarridin B (tarridinB), (llR) -ll, 13 dihydro-Tarridin A (llR) -11, 13-dihydro-A ], etc., pyrethrum (Chrysanthemum morifolium praecox fomentis) are used as powder for external treatment of scabies, and can be used as cut flower and florescence for appreciation, and can be used as insecticide.

At present, no relevant report about using 42.8 percent of fluorine bacterium trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent and adding pyrethrum extract for repelling coprostachys jumps on taro and preventing and treating taro rotten taro skin disease exists.

Disclosure of Invention

In order to solve the problems, the invention provides a more efficient, lower-dosage and more environment-friendly method for preventing and controlling coprinus ocellatus on taros, which reduces the occurrence of taro rotten taro skin disease, and comprises the following steps:

1) before planting, adopting 42.8 percent of fluorine bacterium-trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent, adding pyrethrum extract, and spraying the mixture on the ground for soil disinfection;

2) adopting 42.8 percent of fluorine bacterium trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent, adding pyrethrum extract, soaking the seeds with taro, draining the liquid medicine and sowing the seeds;

3) and (3) performing seedling emergence or growth period of the taros, and irrigating roots by using 42.8 percent of fluobacterium trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent and adding pyrethrum extract.

Regarding the selection of planting soil, selecting a field without insect sources to cultivate taros, adopting decomposed organic fertilizer, controlling the insect sources to enter the field, reducing the field humidity to cause an environment which is unfavorable for the living of the acanthospora, and well ditching and draining the field.

Selecting taro seeds, namely selecting taro corms which do not generate a field of dung thorn springtail as taro seeds, planting early taro varieties as much as possible, and missing the reoccurrence period of the springtail; the seeds dug back in winter are dried by taro corms in the sun, the dung-spine springtail nymphs are killed by frost and sun drying, and then the seeds are stored and preserved, preferably, the seeds are not overwintering by the taro corms.

The method can also adopt taro and rice for crop rotation. The rotation is reasonable, the field insect source base number can be reduced, and the dung-spine springtail is effectively prevented and treated.

Further, the dilution concentration of the 42.8% fluoxastrobin trifloxystrobin suspending agent is 2000 times.

Further, the concentration of the 41.7% fluopyram suspending agent is 5000 times.

Furthermore, the dilution multiple of the pyrethrum extract is 1000 times.

Further, the liquid medicine in the step 3) is used for irrigating roots, and the liquid medicine amount is 450 kilograms per mu or 200ml per plant.

Further, the root irrigation time of the liquid medicine in the step 3) is twice a year, the first time is the seedling emergence stage of the seed taro, and the second time is the 4-5 leaf stage of the taro (before the taro is sealed).

Further, the root irrigation time of the liquid medicine is 4 middle ten days of the month for the first time and 6 early months for the second time. After 7 months, continued use of the drug is not recommended.

On the other hand, the invention also provides application of a mixture as a control agent of the springtail of the coprinus littoralis of crops, wherein the mixture comprises 2000 times of 42.8 percent of fluoxastrobin-trifloxystrobin suspending agent and 1000 times of pyrethrum extract.

Due to the control effect of the 42.8 percent of the fluorine bacterium and trifloxystrobin suspending agent and the pyrethrum extract on the coprostachys springer, the 42.8 percent of the fluorine bacterium and trifloxystrobin suspending agent and the pyrethrum extract can also be used for controlling the coprostachys springer on various crops, such as economic crops with underground tuber parts, such as lily, gastrodia elata, taro and the like.

Furthermore, the crop is taro.

In yet another aspect, the invention also provides the use of a mixture as a control agent for the acanthopoda coprostasis of crops, wherein the mixture comprises 5000 times of a 41.7% fluopyram suspending agent and 1000 times of a pyrethrum extract.

Due to the control effect of the 41.7 percent fluopyram suspending agent on the coprostachys jumps, the 41.7 percent fluopyram suspending agent can also be used for controlling the coprostachys jumps on various crops, such as the economic crops with underground tuber parts, such as lily, gastrodia elata, taro and the like.

Furthermore, the crop is taro.

The invention provides a brand-new method for preventing and treating dung spine springtail on taro, which mainly adopts 42.8 percent of fluobacteria-trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent, adds pyrethrum extract, carries out soil disinfection, seed taro treatment and pesticide liquid root irrigation, and can reduce the field insect source base number through reasonable crop rotation of taro and rice, thereby realizing the prevention and treatment of taro rotten taro skin disease. The method disclosed by the invention can be used for preventing and treating the damage of the coprinus ocellatus on the taro more efficiently and more environmentally, the occurrence of the taro rotten taro skin disease is reduced, the benefits of farmers are guaranteed, and the economic, social and ecological benefits are obvious. In addition, the invention also discloses the application of the mixture of 42.8 percent of fluoxastrobin-trifloxystrobin suspending agent or 41.7 percent of fluopyram suspending agent and pyrethrum extract in preparing the coprostachys springtail control agent of crops such as taro and the like.

Detailed Description

The present invention is described in further detail below with reference to examples, which are intended to facilitate the understanding of the present invention without limiting it in any way.

Example 142.selection of dilution factor for Fluorobacterium trifloxystrobin suspending agent

In this embodiment, 42.8% of fluorine bacteria and trifloxystrobin suspending agent (linasen, bayer crop science and technology limited), or 42.8% of fluorine bacteria and trifloxystrobin suspending agent with different dilution times and 1000 times of pyrethrum extract are used as the control agent for coprinus ocephalus of taro, and the 42.8% of fluorine bacteria and trifloxystrobin suspending agent with the dilution times of 500 times, 1000 times, 1500 times, 2000 times, 2500 times and 3000 times are respectively used as the control; the test site is soil which is damaged by the dung-spine springtail in Yongkang city of Zhejiang.

The preparation method of the pyrethrum extract comprises the following steps: pulverizing flos Pyrethri Cinerariifolii petal, weighing 1g, adding 6ml 100% n-hexane-ethanol solution, extracting under reduced pressure at 40 deg.C under reflux, and filtering to obtain extractive solution with pressure of 70 kPa.

Before planting, respectively spraying 42.8% of fluoxastrobin and trifloxystrobin suspending agents with different dilution times, or 1000 times of solutions of 42.8% of fluoxastrobin and trifloxystrobin suspending agents with different dilution times and pyrethrum extract on the ground for soil disinfection; soaking seed taro by respectively adopting 42.8 percent of fluoxastrobin and trifloxystrobin suspending agents with different dilution times or 1000 times of solutions of 42.8 percent of fluoxastrobin and trifloxystrobin suspending agents with different dilution times and pyrethrum extract, draining off the liquid medicine and sowing; and (3) respectively irrigating roots of taro at the emergence stage or the growth stage by using 42.8% of fluorine bacterium and trifloxystrobin suspending agents with different dilution times or 1000 times of the 42.8% of fluorine bacterium and trifloxystrobin suspending agents with different dilution times and pyrethrum extract, wherein the water consumption per mu is about 450 kilograms, the water consumption per plant is about 200ml, the roots are irrigated for the first time at the emergence stage of the planted taro in the middle ten days of 4 months, dung spine and spine springtail are driven, the roots are irrigated for the second time at the 4-5 leaf stage (before the taro is sealed) at the beginning of 6 months, and the pest and disease damage investigation is carried out on the underground corms of the taro at the beginning of 8 months. The test process all uses clean water as a control. The test results are shown in table 1.

TABLE 142.8 Effect of different dilution factor of Fluorobacterium trifloxystrobin suspending agent

As can be seen from the table 1, when the 42.8 percent of fluobacteria-trifloxystrobin suspending agent with the dilution multiple of less than 2000 times is mixed and matched with 1000 times of pyrethrum extract, the harm of the coprinus dung-spine springtail to the underground tuber of the taro can be 100 percent prevented; when 42.8 percent of fluoxastrobin-trifloxystrobin suspending agent is singly adopted, even if the dilution factor is only 500 times, the damage of 100 percent prevention and control of the coprinus lata springtail to the underground taro tubers can not be realized; from the aspects of environmental protection and cost, the 42.8 percent of fluoxastrobin-trifloxystrobin suspending agent is preferably mixed and compounded with 1000 times of pyrethrum extract when the dilution multiple is 2000 times, and the mixture is used as the coprinus ocellatus control agent of taro.

Example selection of dilution factor for 241.7% Fluopyram suspension

In this example, 41.7% fluopyram suspending agent (luofida, bayer crop science), or 1000 times of the 41.7% fluopyram suspending agent and pyrethrum extract are used as the control agent for coprostasis springtail of taro, and the dilution times of the 41.7% fluopyram suspending agent are 3000 times, 3500 times, 4000 times, 4500 times, 5000 times, 5500 times and 6000 times, respectively, and clear water is used as a control; the test site is soil which is damaged by the dung-spine springtail in Yongkang city of Zhejiang.

The preparation method of the pyrethrum extract comprises the following steps: pulverizing flos Pyrethri Cinerariifolii petal, weighing 1g, adding 6ml 100% n-hexane-ethanol solution, extracting under reduced pressure at 40 deg.C under reflux, and filtering to obtain extractive solution with pressure of 70 kPa.

Before planting, respectively spraying 41.7% fluopyram suspending agent with different dilution times, or 1000 times of the 41.7% fluopyram suspending agent and pyrethrum extract on the ground for soil disinfection; soaking taro seeds in 41.7% fluopyram suspending agent with different dilution times or 1000 times fluopyram suspending agent with 41.7% fluopyram suspending agent and pyrethrum extract respectively, draining the liquid medicine and sowing; in the seedling emergence or growth period of the taro, 41.7% fluopyram suspending agent with different dilution times or 1000 times fluopyram suspending agent and pyrethrum extract are adopted for root irrigation respectively, the water consumption per mu is about 450 kg, the water consumption per plant is about 200ml, the root irrigation is performed for the first time in the seedling emergence period of the taro in the middle ten days of 4 months, dung spine and spine springtail are repelled, the root irrigation is performed for the second time in the 4-5 leaf period (before the closure of the taro) in the beginning of 6 months, and the pest and disease investigation is performed on the underground corm of the taro in the beginning of 8 months. The test process all uses clean water as a control. The test results are shown in table 2.

TABLE 2.41.7 Effect of different dilution factor of Fluopyram suspension

As can be seen from the table 1, the 41.7 percent fluopyram suspending agent with the dilution multiple of below 5000 times can prevent the coprinus rhamnoides from damaging the taros by 100 percent and reduce the occurrence of taro rotten taro skin disease; (ii) a When the 41.7 percent fluopyram suspending agent is singly adopted, even if the dilution factor is only 3000 times, the damage of 100 percent prevention and control of the coprostachys springtail to the underground taro tubers can not be realized; from the aspects of environmental protection and cost, the 41.7 percent fluopyram suspending agent is preferably mixed and compounded with 1000 times of pyrethrum extract when the dilution multiple is 5000 times, and the mixture is used as the coprostachys springtail control agent of taro.

Example 3 comparison of control Effect of different Agents

In this example, the coprostasis springtail control agents of taros were prepared as shown in table 3, respectively, and clear water was used as a control; the test site is soil which is damaged by the dung-spine springtail in Yongkang city of Zhejiang. The test agents mainly comprise: 41.7 percent of fluopyram suspending agent (Lufuda), 42.8 percent of fluoxastrobin suspending agent, 15 percent of indoxacarb suspending agent (Biaoben), 25 g/L of bifenthrin emulsifiable concentrate (tianwangxing), 10 percent of chlorfenapyr suspending agent (carbamat), 3.2 percent of abamectin emulsifiable concentrate (Yetianqingkui), 4.5 percent of phoxim (clenbuterol), 40 percent of dimethoate (Lege), 20 percent of beta-cypermethrin (Bainongsida) and 20 percent of fenvalerate (Huisheng).

The test method was the same as in example 1, and the test results are shown in Table 3.

TABLE 3 comparison of the control effects of different agents

As can be seen from table 3, comparing experimental groups 1, 2 and 3, the application of the 42.8% fluoxastrobin trifloxystrobin suspending agent alone was 2000-fold, and the incidence rate remained 8.4% without pyrethrum extract; when 1000 times of pyrethrum extract is applied independently, the morbidity is still 55.6 percent; after the mixture of 42.8% of the fluorine bacterium and trifloxystrobin suspending agent and the pyrethrum extract is applied, the harm of the coprinus rhamnoides to the taro can be prevented by 100%, so that the obvious synergistic effect is generated by the 42.8% of the fluorine bacterium and trifloxystrobin suspending agent and the pyrethrum extract, and the prevention and treatment effect can be greatly improved.

Comparing experimental groups 2, 4 and 5, it can also be seen that, when 5000 times of the liquid of 41.7% fluopyram suspension is applied alone, the incidence rate is still 7.2% without pyrethrum extract; when 1000 times of pyrethrum extract is applied independently, the morbidity is still 55.6 percent; after 41.7% of fluopyram suspending agent and pyrethrum extract are applied, the damage of the coprostachys springtail to the taro can be prevented and controlled by 100%, so that the 41.7% of fluopyram suspending agent and the pyrethrum extract generate obvious synergistic effect, and the prevention and control effect can be greatly improved.

As can be seen from the comparison of experimental groups 6-21, the control effect is obviously inferior to that of groups 1, 3, 4 and 5. And 15% indoxacarb suspending agent, 25 g/L bifenthrin emulsifiable concentrate, 10% chlorfenapyr suspending agent, 3.2% abamectin emulsifiable concentrate, 4.5% phoxim, 40% dimethoate, 20% beta-cypermethrin, 20% fenvalerate and the pyrethrum extract are mixed and applied respectively, no obvious synergistic effect is found, and the incidence rate of taro rotten taro skin disease is still high.

Therefore, the reagent prepared by adopting 2000 times of 42.8 percent of fluoxastrobin-trifloxystrobin suspending agent or 5000 times of 41.7 percent of fluopyram suspending agent and adding 1000 times of pyrethrum extract is the most efficient taro dung-spine springtail control agent.

Example 4 Effect of the inventive treatment technique on the pesticide residue of taro

And (5) treating the taros according to the treatment number 3 or 5 in the example 3, and after the taros are mature, selecting taros which have normal shapes, basically uniform sizes and no obvious cracks or decays for detecting pesticide residues. The pesticide residue detection of fluopyram, trifloxystrobin and abamectin is carried out according to the method specified in GB/T20769-2008, and the pesticide residue detection of bifenthrin is carried out according to the method specified in GB 23200.9-2016.

TABLE 4 influence of different fungicides on the pesticide residue of taro underground tubers (mg/kg)

As can be seen from the results in Table 4, the taro processing technology of the present invention not only can effectively reduce the insect source base number in the taro field, and reduce the occurrence of taro rotten taro skin disease, but also does not detect the pesticides such as fluopyram, trifloxystrobin and the like used in the underground tubers of the taro harvest period, and meets the national standards of the people's republic of China-the determination of residual amounts of 450 pesticides and related chemicals in fruits and vegetables GB/T20769-2008 and the national standards of the people's republic of China-the determination of residual amounts of 475 pesticides and related chemicals in food safety national standard cereal grains.

Example 5 Effect of the inventive treatment technique on the safety of taros

The taros are treated according to the treatment numbers 3 and 5 in the example 3, and after the taros are mature, taros with normal shapes, basically uniform sizes and no obvious cracks or decays are selected for safety detection. The detection method comprises the following steps: the method comprises the steps of detecting the measurement of lead in food according to the method specified in GB/T5009.12, detecting the measurement of cadmium in food according to the method specified in GB/T5009.15, detecting the measurement of the residual quantity of organophosphorus pesticide in food according to the method specified in GB/T5009.20, detecting the residual quantity of phoxim pesticide in plant food according to the method specified in GB/T5009.102, detecting the residual quantities of cypermethrin, fenvalerate and deltamethrin in plant food according to the method specified in GB/T5009.110, detecting the residual quantity of triadimefon in the plant food according to the method specified in GB/T5009.162, and detecting the measurement of thiophanate-methyl and carbendazim in vegetables and fruits according to the method specified in GB/T5009.188.

TABLE 5 results of the safety test of the inventive processing technique on taros

As can be seen from the results in Table 5, the processing technology of the invention has better safety in the implementation of the taro field, heavy metals such as lead and cadmium are not detected in the processed taro, and high-toxicity pesticides such as dimethoate, trichlorfon, phoxim, fenvalerate, triadimefon and carbendazim are not detected, so that the taro meets the standard of the agricultural industry of the people's republic of China and is a pollution-free food, namely taro NY 5251-doped 2004, and the taro can be directly eaten.

From the above, the application discloses a processing method in taro growth process, this processing method has good inhibitory action to taro rotten taro skin disease, through the suppression to excrement thorn springtail insect source cardinal number in taro field piece, can show the emergence that reduces taro rotten taro skin disease, taro quality has been improved from the source, the chance that arouses the disease because the pest gnaws has been reduced, it is high to have the security, no pesticide residue's advantage, the edible security of taro has not only been guaranteed, and provide technical support for the nuisanceless production of taro.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.