Single-season rice region in the southwestern plateau (all in Yunnan Province, southwest of Sichuan Province, most of Guizhou Province, western part of Hunan Province, northern Guangxi Zhuang Autonomous Region)
Fertilization principle
(1) Add organic fertilizer, implement straw returning, and combine organic and inorganic. (2) Adjust the ratio of base fertilizer to top dressing and reduce the amount of nitrogen fertilizer used in the previous period. (3) In the case of phosphorus-deficient soil, phosphate fertilizer should be added appropriately; it is best to choose calcium, magnesium and phosphorus fertilizers.
(4) Rice fields with low potassium supply capacity, pay attention to potassium supplementation in the late growth stage of rice. (5) In a field with a soil pH of 5.5 or less, an alkaline soil conditioner containing silicon calcium or a base applied lime is suitably applied.
(6) Fertilizer application combined with high-yield and high-quality cultivation techniques. 2. Fertilization advice
(1) Recommended 17-13-15 (N-P2O5-K2O) or similar formula. (2) The production level is 400~500 kg/mu, and the recommended dosage of formula fertilizer is 26~33 kg/mu. The fertilizer is divided into 6~7 kg/mu, 4~5 kg/mu.
(3) The production level is 500~600 kg/mu, and the recommended dosage of formula fertilizer is 33~39 kg/mu. The fertilizer is divided into 7~8 kg/mu, 5~6 kg/mu, and the grain fertilizer is applied. Potassium chloride 1~2 kg/mu.
(4) The production level is above 600 kg/mu, and the recommended dosage of formula fertilizer is 39~46 kg/mu. The fertilizer is divided into 8~10 kg/mu, 6~7 kg/mu, and the grain fertilizer is chased by chlorine. Potassium is 2~4 kg/mu.
(5) The production level is below 400 kg/mu, the recommended dosage of formula fertilizer is 20~26 kg/mu, and the fertilizer of split tiller and ear grain is applied 4~6 kg/mu, 3~4 kg/mu respectively.
(6) In the zinc-deficient area, apply 1~2 kg of zinc sulfate per acre; apply 30-50 kg of siliceous alkaline fertilizer or quicklime per acre of the soil with low soil pH.
This article is the website: In the spring of 2015, the southwest plateau mountain single-season rice area scientific fertilization technical guidance
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