Special fertilizer for yam in Wen-County region and fertilization method

Abstract

The invention belongs to special fertilizer for a yam in a Wen-County region and a fertilization method. The special fertilizer is prepared from special base fertilizer and special additional fertilizer, wherein the special base fertilizer has the total nitrogen content of 18 percent, which is calculated according to N, the effective phosphorus content of 7 percent, which is calculated according to P2O5 and the effective potassium content of 20 percent, which is calculated according to K2O; nitrogen fertilizer is urea; phosphorus fertilizer is monoammonium phosphate; potassium fertilizer is potassium sulfate; the special additional fertilizer has the total nitrogen content of 16 percent, which is calculated according to the N, the effective phosphorus content of 6 percent, which is calculated according to the P2O5 and the effective potassium content of 22 percent, which is calculated according to the K2O; the nitrogen fertilizer is urea; the phosphorus fertilizer is the monoammonium phosphate; the potassium fertilizer is the potassium sulfate. The special fertilizer has the advantages of being capable of sufficiently providing nutritional ingredients needed by the growth and development of the yam, ameliorating and controlling the influence of the continuous cropping obstacle of the yam on the growth of the yam, meanwhile, providing a formula of the special fertilizer for the yam, which can be also used for reducing the addition and the waste of fertilizer, realizing scientific fertilization and improving the yield and quality of the yam.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a special fertilizer for yam in Wenxian area and a fertilization method. Background technique [0002] The four major medicines refer to the four major traditional Chinese medicines produced in the ancient Huaiqing Prefecture (now Jiaozuo City, Henan Province), including yam, achyranthes bidentata, rehmannia glutinosa, and chrysanthemum. According to the Qin River, only the unique geographical location and climate of Wen County can produce iron stick yam. However, yam and rehmannia glutinosa are forbidden crops, and the crop rotation cycle is 5-8 years (the actual crop rotation cycle is 10 years after investigation). Wen County has more than 400,000 mu of arable land, and the yam planting area is maintained at 20,000 to 30,000 mu every year. In the process of yam planting, the problem of continuous cropping obstacles is very prominent. After each crop is harvest...

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Problems solved by technology

(2) The autotoxicity of crop root exudates, the organic matter secreted by crop roots to the rhizosphere soil accumulates in the soil, causing toxic effects on the plants themselves; (3) The number of pathogenic microorganisms increases, and long-term continuous cropping causes changes in soil microbial flora , the normal microbial community and its structure in the rhizosphere are broken, reducing the level of microbial diversity and pathogenic antagonists, affecting the normal growth and development of plants, and thus affecting the yield and quality of crops

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