Yam hi organic fertilizer, from sowing until hair tree can be paved. There is no limit to the number of paving facilities that can be applied in appropriate amounts. Before applying the organic fertilizer to the field, it should be fully fermented and decomposed, otherwise it is easy to spread weeds and diseases and pests. At the same time, unfermented organic fertilizer is applied to the field and then fermented, which can easily harm the root system, especially the tip of the tuber, and the tissue is tender and touched. It is burned to the fecal matter, affecting the vertical extension of the meristem of the stem. At the same time, the application of organic fertilizer needs to consider the nature of the soil, horse manure, sheep manure and other relatively loose, organic matter content, easy to ferment and decompose, this fertilizer should be applied to low temperature or sticky soil. Cow manure, pig manure and other organic matter content is small, the organization is fine, the water is much, the fermentation is decomposed slowly, the effect is also slow, it is suitable to be applied to sandy or sandy loam soil. This fertilization can not only play a fertilizer effect, but also improve the texture of the soil.
The application of organic fertilizer can not only provide nutrition, but also reduce the temperature of the soil, maintain lyrical conditions, stabilize soil permeability, and control weeds. Avoid applying organic fertilizers in the soil inside the yam ditch.
In the process of fermenting organic manure, phosphorus fertilizer is added. Generally, 50-60 kg of superphosphate is used per 667 square meters.
For organic fertilizers, special attention should be paid to avoiding fecal matter. The organic fertilizer must be crushed and minced to prevent the tip of the tuber from hitting the fecal matter and causing necrosis and even necrosis.
The early application of yam to nitrogen fertilizer is beneficial to the growth of stems and leaves. Generally, dilute urine is applied after the emergence of the seedlings or the survival of the transplant. After that, 50% of the human excrement is applied every 20-30 days; Hair trees are chased 1-2 times, applying 15 kg urea every 667 square meters. Plants should be re-applied once budding, can be more appropriate human feces and urine plus cake fat; or nitrogen, phosphorus, potassium fertilizer every 667 square meters of 40-50 kilograms, in order to ensure that tuber elongation and expansion have adequate nutrition. A fertilizer should be applied again in early September, and no fertilizer should be applied after mid-September.
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