阅读说明：本技术 一种提高赖草种子发芽率的方法 (Method for improving germination rate of lysimachia seeds ) 是由 杜利霞 赵凯玥 钟华 夏方山 朱慧森 赵祥 于 2019-11-29 设计创作，主要内容包括：本发明适用于植物栽培技术领域,提供了一种提高赖草种子发芽率的方法。首先筛选赖草种子,清除赖草种子中的瘪粒和杂物,把种子装入网孔小于种子粒径的网袋中,封口。然后挖取深大于50cm的土坑,将赖草种子平铺于坑内,填埋泥土,填埋赖草种子的深度距离地面不低于50cm,温度保持在-2℃～5℃。层积90天～120天后取出赖草种子,该方法能使赖草种子发芽率比未处理种子提高2.6～7.6倍,且能批量处理种子,层积后不用种子和沙石分离,取出后即可种植或进行实验。该方法不仅能提高赖草种子的发芽率、出苗率,且初始出苗时间能提前3～5天,加速了幼苗的建成,降低赖草种植成本,具有极大的推广意义和使用价值。(The invention is suitable for the technical field of plant cultivation, and provides a method for improving the germination rate of lysimachia seeds. Firstly, screening the rice grass seeds, removing shriveled grains and sundries in the rice grass seeds, putting the seeds into a mesh bag with meshes smaller than the grain diameter of the seeds, and sealing the mesh bag. Then digging a soil pit with the depth of more than 50cm, flatly paving the lysimachia seeds in the pit, burying soil, wherein the distance between the buried lysimachia seeds and the ground is not less than 50cm, and the temperature is kept at-2-5 ℃. The germination rate of the grass seeds can be improved by 2.6-7.6 times compared with that of untreated seeds by taking the grass seeds out after 90-120 days of stratification, the seeds can be treated in batches, the seeds are not separated from sand and stones after the stratification, and the grass seeds can be planted or tested after being taken out. The method can improve the germination rate and emergence rate of the lysimachia seeds, and the initial emergence time can be advanced by 3-5 days, so that the establishment of seedlings is accelerated, the planting cost of the lysimachia is reduced, and the method has great popularization significance and use value.)

1. A method for improving the germination rate of grass seeds is characterized by comprising the following steps: the method comprises the following steps:

1) screening the lysimachia seeds, and removing shriveled grains and sundries in the lysimachia seeds;

2) digging a soil pit, flatly paving the lysimachia seeds in the pit, and burying soil to ensure that the distance between the height of the lysimachia seeds and the ground is not less than 50cm, and keeping the temperature at minus 2-5 ℃;

3) and (3) after the step 2) is finished, taking out the lysimachia seeds after 90-120 days of stratification.

2. The method of increasing the germination rate of grass seeds as claimed in claim 1, wherein: in the step 1), the grass seeds are screened by adopting a mesh screen, and the specification of the mesh screen is 12 meshes.

3. The method of increasing the germination rate of grass seeds as claimed in claim 1, wherein: sterilizing the screened grass seeds by adopting ultraviolet rays, and then filling the grass seeds into a mesh bag.

4. The method of improving the germination rate of grass seeds as claimed in claim 3, wherein: the grass seeds sterilized by ultraviolet rays are put into a mesh bag, and the diameter of the mesh bag is smaller than that of the grass seeds.

5. The method of increasing the germination rate of grass seeds as claimed in claim 1, wherein: in the step 2), the soil pit is rectangular, and when the mesh bag is flatly paved in the soil pit, the thickness of the seeds in the mesh bag is less than 1 cm.

6. The method for improving the germination rate of grass seeds as claimed in claim 4, wherein the seeds can be treated in batches, characterized in that: in the step 2), multiple layers of grass seeds are placed in the soil pit along the height direction, one or more mesh bags can be flatly laid on each layer, the thickness of the seeds of each mesh bag cannot exceed 1cm, each layer of grass seeds is separated by a soil layer, and the height of the grass seeds on the highest layer from the ground is not less than 50 cm.

7. The method of increasing the germination rate of grass seeds as claimed in claim 6, wherein: the thickness of the soil layer between each layer of mesh bag is 3-5 cm.

Technical Field

The invention belongs to the technical field of plant cultivation, and particularly relates to a method for improving the germination rate of lysimachia seeds.

Background

The lysimachia (Leymussecalinus) is perennial rooted grass of lysimachia, has strong asexual reproduction capability and strong saline-alkali resistance, normally grows on saline-alkali land with the pH value of 9-10 to complete the life history of the lysimachia, has high nutritional value, and is high-quality forage grass for biologically improving saline-alkali land.

The dormancy degree of the grass seeds is deep, the germination rate is low, and the germination rate of the seeds without treatment is only 5-12%. The existing method for breaking dormancy of lysimachia and improving germination rate comprises the following steps: treating the grass seeds with 35% polyethylene glycol or 20ppm indoleacetic acid at an optimum temperature of 25 deg.C to promote germination; treating the seeds with acid and alkali to break dormancy; or increasing germination rate by temperature change treatment. The method for breaking dormancy of lysimachia has the problems of concentration, difficult temperature control, difficult time control, requirement of certain facilities, high cost, difficult copying and the like. Other plant seed breaking dormancy utilizes wet sand low-temperature stratification, and the method has the defects of complex operation, selection of sand with proper grain size before stratification, and separation of sand and seeds after stratification.

Disclosure of Invention

The invention provides a method for improving the germination rate of grass seeds, and aims to solve the problems of the existing method.

The invention is realized in such a way that a method for improving the germination rate of grass seeds comprises the following steps:

1) screening the lysimachia seeds, and removing shriveled grains and sundries in the lysimachia seeds;

2) digging a soil pit, flatly paving the lysimachia seeds in the pit, and burying soil to ensure that the distance between the height of the lysimachia seeds and the ground is not less than 50cm, and keeping the temperature at minus 2-5 ℃;

3) and (3) after the step 2) is finished, taking out the lysimachia seeds after 90-120 days of stratification.

Preferably, in step 1), the grass seeds are screened by using a mesh screen, and the size of the mesh screen is 12 meshes.

Preferably, the screened grass seeds are sterilized by ultraviolet rays and then packed into a mesh bag.

Preferably, the grass seeds sterilized by ultraviolet rays are filled into a mesh bag, and the diameter of the mesh bag is smaller than that of the grass seeds.

Preferably, in the step 2), the soil pit is rectangular, and when the mesh bag is flatly paved in the soil pit, the thickness of the seeds in the mesh bag is less than 1 cm.

Preferably, in order to treat the seeds in batches, in the step 2), a plurality of layers of grass seeds are placed in the soil pit along the height direction, each layer can be flatly paved with one or more mesh bags, the thickness of the seeds in each mesh bag cannot exceed 1cm, each layer of grass seeds is separated by a soil layer, and the height of the grass seeds at the highest layer from the ground is not less than 50 cm.

Preferably, the thickness of the soil layer between each layer of mesh bag is 3-5 cm.

Compared with the prior art, the invention has the beneficial effects that: the invention relates to a method for improving the germination rate of grass seeds. Firstly, screening the lysimachia seeds, removing shriveled grains and sundries in the lysimachia seeds, then digging a soil pit, flatly paving the lysimachia seeds in the pit, burying soil to ensure that the height of the lysimachia seeds is not less than 50cm away from the ground, keeping the temperature at minus 2-5 ℃, and taking out the lysimachia seeds after 90-120 days of stratification. The method can improve the germination rate of the grass seeds by 2.6-7.6 times compared with untreated seeds, can treat the seeds in batches, does not need to separate the seeds from sand and stones after stacking, can be used for planting or performing experiments after being taken out, is convenient to operate and saves labor. The method can improve the germination rate and emergence rate of the lysimachia seeds, and the initial emergence time can be advanced by 3-5 days, so that the establishment of seedlings is accelerated, the planting cost of the lysimachia is reduced, and the method has great popularization significance and use value.

Drawings

Fig. 1 is a schematic flow chart of a method for increasing the germination rate of grass seeds according to a first embodiment of the present invention.

Fig. 2 is a schematic flow chart of a method for increasing the germination rate of grass seeds according to a second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.