Method for harvesting Stylosanthes spp. seeds through film covering

Abstract

The invention discloses a method for harvesting Stylosanthes spp. seeds through film covering and belongs to the technical field of grass seed production. The method comprises the steps of rational close planting: applying well-rotted farmyard manure and calcium superphosphate in degraded mountains in the Jinsha River dry-hot valley through combination of soil preparation, digging a planting pond, and enabling spacing in the rows and spacing between rows to be 40cm*100cm or 100cm*100cm; field management; and seed harvest through film covering: when Stylosanthes spp. seeds appear on Stylosanthes spp. buds, spreading white polyethylene micro films between Stylosanthes spp. lines, when 90% of buds on Stylosanthes spp. plants generate Stylosanthes spp. seeds, cutting the Stylosanthes spp. and directly knocking seeds into bowls for collecting seeds, then, mixing seeds in the bowls and seeds dropping onto the polyethylene micro films together, and screening out impurities. According to the method, the seed yield is improved substantially due to the planting density and the film-covering harvesting measure.

Description

technical field [0001] The invention relates to a method for harvesting stylo seeds with a covering film, and belongs to the technical field of pasture seed production. Background technique [0002] Stylosanthes spp. has the characteristics of nitrogen fixation, fast growth, cutting resistance, applicability, drought tolerance, etc., and has good palatability. It is an important leguminous forage and feed in tropical and subtropical regions where cattle, sheep and other livestock and poultry like to eat The plant is an excellent forage grass suitable for planting on dry slopes in hot and dry valleys. [0003] The dry-hot valley of the Jinsha River is located in the area between 25.5°~28.0°N, 100.3°~103.60°E. It has a subtropical climate, with an annual average temperature of 20°C-23°C, annual precipitation of 600-800mm, and annual evaporation of 2500- 3800mm, which is 3 to 6 times the precipitation. The dry season is concentrated from September to June of the following year...

AI Technical Summary

Problems solved by technology

The first method of harvesting seeds is to manually mow the stylo (referred to as artificially mowed plant harvest), dry it for 1 to 2 days, beat the mowed stylo with a wooden stick to make the seeds fall into the pot, and then remove impurities , this method of harvesting seeds exists during the 30-50 days of seed maturity, and mature seeds fall into the soil or soil cracks at any time, making it difficult to collect and remove impurities, affecting seed yield and quality, and causing serious loss of seed yield

Another method is to often go to the ground to observe. When more seeds are observed on the flower buds of Stylophyllum, the Stylophyllum plants are manually patted to cause the seeds to fall into the pot (called artificially slapping the plants to collect seeds). I have observed many times that the method of harvesting seeds is labor-intensive and time-consuming. On the other hand, the immature seeds on the flower buds will also fall off due to the impact of beating, so that more immature seeds are received, which affects the quality of the seeds. Many seeds fall into the soil or soil cracks, it is difficult to collect and remove impurities, which affects the yield and quality of seeds, resulting in serious loss of seed yield

Using any of these methods will affect the yield and quality of seeds, resulting in 47%-69% seed loss, labor-intensive and time-consuming, and the operability is not strong, etc.

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