Guiding Opinions on Rice Science Fertilization Technology in Single and Double Rice Fields in Hilly and Mountainous Areas of Jiangnan in Spring of 2015

Single-double-season rice area in the hilly area of ​​the south of the Yangtze River (central south of Hunan Province, southeast of Jiangxi Province, southern Zhejiang Province, north central Fujian Province, northern Guangdong Province)

Fertilization principle

(1) Determine the target yield according to soil fertility, control the total amount of nitrogen fertilizer, balance application of nitrogen, phosphorus and potassium, and combine organic and inorganic.

(2) Deep application of base fertilizer, topdressing "with water with nitrogen".

(3) Phosphate fertilizer preferentially choose calcium magnesium phosphate fertilizer or calcium.

(4) Appropriate application of soil amendments or based limes to acidic soils. 2. Fertilization advice

(1) Under the condition of about 500 kg per mu, nitrogen fertilizer (N) 10~13 kg/mu, phosphate fertilizer (P2O5) 3~4 kg/mu; potash fertilizer (K2O) 8~10 kg/mu.

(2) Nitrogen application in divided applications, base fertilizer accounts for 35%~50%, tiller fertilizer accounts for 25%~35%, panicle fertilizer accounts for 20%~25%, tiller fertilizer is appropriately postponed; all phosphate fertilizers are applied; potassium fertilizer is 50% as base fertilizer 50% as the ear fertilizer.

(3) It is recommended to return the straw to the field or increase the application of organic fertilizer. For the plots where the straw is returned to the field, the amount of potassium fertilizer can be reduced by 30%; for the field where organic fertilizer is applied, the amount of base fertilizer can be appropriately reduced.

(4) On the soil with strong acidity, 40~50 kg of siliceous alkaline fertilizer or quicklime should be applied per acre.

This article is the website: In the spring of 2015, Jiangnan hilly mountain single-double-season rice area scientific fertilization technology guidance

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