Guidance for scientific fertilization of major crops in the spring of 2018 (potato part)

Guidance for scientific fertilization of major crops in the spring of 2018 (potato part)

potato

First, the northern potato area

(1) It is recommended that 11-18-16 (N-P2O5-K2O) or similar formula be used as seed fertilizer, and urea and potassium sulfate (or nitrogen-potassium compound fertilizer) as top dressing.

(2) The production level is 3000 kg/mu or more, the recommended dosage of formula fertilizer (fertilizer) is 60 kg/mu, and the application period of the seedling stage to the tuber expansion period is 18~20 kg/mu, and the potassium sulfate is 12~15 kg/mu. .

(3) The production level is 2000~3000 kg/mu, the recommended dosage of formula fertilizer (fertilizer) is 50 kg/mu, and the application period of the seedling stage to the tuber expansion period is 15~18 kg/mu, and the potassium sulfate is 8~12 kg/ mu.

(4) The production level is 1000~2000 kg/mu, the recommended dosage of formula fertilizer (fertilizer) is 40 kg/mu, and the application period of the seedling stage to the tuber expansion period is 10~15 kg/mu, and the potassium sulfate is 5~8 kg/mu. (5) The production level is below 1000 kg/mu. It is recommended to apply 19-10-16 (N-P2O5-K2O) or similar formula fertilizer 35~40 kg/mu, and apply once at the time of sowing.

Second, the southern spring potato area

(1) It is recommended that 13-15-17 (N-P2O5-K2O) or similar formula be used as base fertilizer, urea and potassium sulfate (or nitrogen-potassium compound fertilizer) as top dressing; or 15-10-20 (N-P2O5-K2O) ) or similar formula for top dressing.

(2) The production level is more than 3000 kg/mu: the recommended dosage of formula fertilizer (base fertilizer) is 60 kg/mu; the seedling stage to the tuber expansion period is to apply urea 10~15 kg/mu, potassium sulfate 10~15 kg/mu, Or topdressing formula fertilizer (dressing fertilizer formula 15-10-20) 20~25 kg/mu.

(3) The production level is 2000~3000 kg/mu: the recommended dosage of formula fertilizer (base fertilizer) is 50 kg/mu; the seedling stage to the tuber expansion period is 5~10 kg/mu, and the potassium sulfate is 8~12 kg/mu. Or topdressing formula fertilizer (dressing fertilizer formula 15-10-20) 15~20 kg/mu.

(4) The production level is 1500~2000 kg/mu: the recommended dosage of formula fertilizer (base fertilizer) is 40 kg/mu; the seedling stage to the tuber expansion period is 5~10 kg/mu, and the potassium sulfate is 5~10 kg/mu. Or topdressing formula fertilizer (dressing fertilizer formula 15-10-20) 10~15 kg/mu.

(5) The production level is below 1500 kg/mu: the recommended dosage of formula fertilizer (base fertilizer) is recommended to be 40 kg/mu; the seedling stage to the tuber expansion period is to apply urea 3~5 kg/mu, potassium sulfate 4~5 kg/ Mu, or topdressing formula fertilizer (dressing fertilizer formula 15-10-20) 10 kg / mu.

(6) Apply 2~3 square organic fertilizer per mu as base fertilizer; if organic fertilizer is applied to the base fertilizer, reduce the amount of chemical fertilizer as appropriate.

(7) For soils deficient in boron or zinc, 1 kg/mu of borax or 1~2 kg/mu of zinc sulfate may be applied.

This article URL: Spring Fertilization Guidance for Major Crops in Spring 2018 (Potato Part)

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