Ziyunying fertilizer management technology
In order to increase the yield of Ziyunying, appropriate fertilization measures should generally be taken in order to promote early nodule formation and early seedling emergence.
The first should be based on phosphate fertilizer. Phosphate fertilizer should pay attention to the choice of phosphate fertilizer varieties. Phosphate fertilizer dosage is preferably 300 kg/hm2 of calcium, magnesium and phosphate fertilizers. If calcium superphosphate is used, it is necessary to use a small amount of ash to neutralize the free acid in the phosphate fertilizer to prevent seed germination. Potassium fertilizer can significantly increase the fresh grass yield of the milk vetch. Generally, it is used when harvesting rice, and the amount is generally 75-150 kg/hm2 of potassium sulfate. The harvest season is small spring before the harvest, and it is also the winter growth and branching of the milk vetch. At the peak, strengthening water and fertilizer management is a key technical measure that will lay the foundation for the early spring high yield. The time should be before and after the "winter solstice", after the recovery of potash 45 ~ 60 kg / hm2 or ash 750 kg / hm2, improve the cold resistance of seedlings, promote the spraying of 0.05% ammonium molybdate + 0.20% potassium dihydrogen phosphate, to promote the pre-winter seedlings Many branches, the average number of branches required before the winter reached more than three branches. Ziyunying is transferred from the winter to the spring period. The stems and leaves grow fast and require large amounts of fertilizer. Spring fertilizer application period in late February or early March, application of urea 45 ~ 75 kg/hm2, potassium chloride 45 ~ 60 kg/hm2. After the beginning of spring, clear the ditch and reduce the ground water level in time, so as to promote the good growth of the purple cloud root system. After the beginning of spring, it is necessary to clear the ditch several times, so that after the heavy rain, the surface is not covered with water. Usually, one plow is dipped at a distance of about 3m and a ditch is repaired with a hoe to a depth of 15-20cm. The trench should be deepened to more than 35cm, and the trench should be connected and connected up and down. Pingyang Tian about 100m to import field drains to facilitate smooth drainage, especially in the late growth of Ziyunying, in order to prevent the occurrence of stagnant water and sclerotium, but also do a good job in drainage work.
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