1, the choice of variety
According to the difference of drought resistance and cold resistance of forage varieties, combined with the intensity and range of effects of Spring drought on soil moisture, the forage species with low temperature tolerance, strong ability of seed arching and drought resistance were selected. In relatively dry and infertile plots, leguminous forages such as sorghum, sand sorghum, red and white clover, and grassy forages such as tall fescue, sudangrass and sweet sorghum can be selected. In the relatively fertile soil and high organic matter, you can choose to plant high-yielding varieties such as Mexican corn, high-density grass, European chicory, grain glutinous rice, sylvestris, and Russian feed vegetables.
2. Seed treatment
Pre-sow selection and drying, through the decontamination, to the granules, to obtain a more uniform seed; the purity of the selected forage seeds should be above 96%, and the clarity is above 98%. Choose to dry for three days before sowing to improve germination rate, disease resistance and uniformity of emergence.
3. Fertilize and transfer water
Before the sowing, combined with the application of organic fertilizer, the organic fertilizer is generally applied to 1.5 to 2 tons per mu. Adding potassium fertilizer to the soil can increase the water use efficiency and enhance the drought resistance by reducing the transpiration loss of the forage seedlings; it is generally suitable to apply 3 to 5 kg of potassium oxide per mu. When applying chemical fertilizers, the fertilizer should be applied in depth to separate the seeds and fertilizers, avoid burning seeds and young roots, and affect the emergence of seedlings.
4. 墒 sowing
For plots with poor bottoms, it is necessary to make the best use of all available water sources, especially for the sowing of grasses. When the melons such as mexican corn, sweet sorghum, high danshen or European chicory are sowed, the sowing depth is generally 2-3 cm, and then the soil is covered to promote emergence.
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