Due to the differences in pasture varieties, they must be processed before sowing. Such as hard treatment and rhizobia inoculation, is conducive to the germination of seeds to ensure the quality of sowing. Many leguminous seed coats have a layer of closely packed long columnar Martensitic cells that are not easily penetrated by water and impede water swelling and sprouting. The hardiness rate of razor clams is 10%, and that of rakes is 39%. Therefore, hard seed should be treated before sowing legumes. Hard treatment 1. The seed coat can be grinded with roller mills or treated with a roller compactor. Legume grass seed can also be mixed with a certain amount of gravel and gravel and stirred in a stirrer until the seed surface. Rough fluff, but it is better not to crush the seeds. 2. Variable temperature seed soaking can generally be applied where the soil is wet or where irrigation is good. Usually the seeds are soaked in hot water and soaked overnight. Exposure to the sun during the day and cool to the night, and often add some water to keep the seeds moist. When most of the seeds are inflated, they can be sown according to the lyrics. 3, acid treatment Add sulfuric acid or hydrochloric acid to the seeds and stir it evenly with the seeds. When the seed coat cracks, put the seeds into running water to clean, and add a little drying to sowing. Rhizobium leguminous inoculation can symbiotic nitrogen fixation with rhizobia, but the formation of legume nodules is closely related to the number of rhizobial bacteria in the soil, especially for leguminous forages for the first time on the Xinyi land, or for replanting on the same plot. The legume grass is cultivated on the same legume grass or on excessively arid and high-acid lands. The number of root nodules should be increased by sclerotinia in order to increase the yield and quality of leguminous herbage. When leguminous grasses are inoculated with rhizobia, the type of rhizobia must first be determined based on the species of herbage, and the scientific inoculation method must be followed. Inoculation method is currently used in practice more than three kinds: dry tumor method, bright tumor method and bacterial seed dressing method. 1. The dry nodule method is to select the root of leguminous herbage at the flowering stage, rinse it with water, place it in a place sheltered from wind, darkness, coolness and sunlight, and make it dry slowly. Grind dressing and dressing before forage sowing. 2. The method of fresh tumor is to dilute the rhizobial bacteria or ground roots with a small amount of water and mix them with cooked soil and mix them at 20-25°C for 3 to 5 days. The bacteria and the seeds to be sowed Seed dressing. 3, rhizobia inoculation is the rhizobia preparation according to instructions bactericidal liquid sprayed on the seed, the standard proportion of rhizobia seed dressing is 1 kg of seeds mixed with 5 grams of bacteria. When picking and dressing seedlings, seeds that have been seeded with rhizobia are not brought into contact with quicklime or a large amount of fertilizer to avoid killing and killing Rhizobium, and inoculation with Rhizobium in the same family is effective and mutual inoculation of different races is ineffective. In addition, some of the seeds of grasses often have appendages such as awns and glume. These appendages are not easily removed during harvesting and processing. In order to ensure the seed quality of the seeds and the smooth progress of the drying and cleaning, the seeds should be treated with awns. Going to the mansard can be done using a mansard machine or after pressing with a ring-shaped suppressor. For the germination of other forage grasses, both the Polygonaceae and the Compositae herbage are generally soaked with germination before sowing. The method is to soak the seed in warm water for a period of time. The temperature of the water and the length of the soaking time can be determined according to the characteristics of the seed. For example, the seeds of schisandra chinensis were soaked in water at 30°C for 12 hours before sowing. Then sowing; Rumex before seeding cloth to be soaked in water at 40 °C for 6 to 8 hours, remove and then drying in the environment at 25 ~ 28 °C germination 15 to 20 hours, about When 70% to 80% of the seed embryos are broken shells are sown. Under good conditions, it can be broadcast live.
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