Southern potato planting cultivation technology and fertilization method in 2017

In view of the problems of insufficient application of organic fertilizer and potassium fertilizer during potato planting in autumn and winter in the south, the following fertilization principles are proposed:

(1) Optimize the amount of NPK fertilizer according to soil fertility conditions;

(2) Adding organic fertilizer, promoting organic and inorganic application and straw mulching; avoiding organic fertilizer that is not fully decomposed;

(3) Appropriate application of potassium fertilizer based on soil potassium status;

(4) Fertilizer application should be based on base fertilizer and topdressing fertilizer, and topdressing fertilizer should be based on nitrogen and potassium fertilizer;

(5) Fertilizer application should be combined with green yield increasing and effective cultivation techniques.

2. Fertilization advice

(1) The output level is above 3000 kg/mu, the nitrogen fertilizer (N) is 11-13 kg/mu, the phosphate fertilizer (P2O5) is 9-11 kg/mu, and the potassium fertilizer (K2O) is 12-15 kg/mu;

(2) The production level is 2000-3000 kg/mu, the nitrogen fertilizer (N) is 9-11 kg/mu, the phosphate fertilizer (P2O5) is 7-9 kg/mu, and the potassium fertilizer (K2O) is 10-12 kg/mu;

(3) The production level is 1500-2000 kg/mu, the nitrogen fertilizer (N) is 7-9 kg/mu, the phosphate fertilizer (P2O5) is 5-7 kg/mu, and the potassium fertilizer (K2O) is 7-10 kg/mu;

(4) The production level is below 1500 kg/mu, nitrogen fertilizer (N) is 6-7 kg/mu, phosphate fertilizer (P2O5) is 3-5 kg/mu, and potassium fertilizer (K2O) is 5-7 kg/mu.

Apply 2 to 3 square meters of organic fertilizer per mu as base fertilizer; if organic fertilizer is applied to the base fertilizer, the amount of chemical fertilizer can be reduced as appropriate.

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

For areas with sulfur deficiency, use sulfur-containing fertilizers or 2 kg/mu of sulfur.

40% to 50% of nitrogen and potassium fertilizers are used as base fertilizers, and 50% to 60% are used as top dressings. Phosphate fertilizers are all used as base fertilizers. Potassium fertilizers in the field of soil texture should be applied in several stages.

This article URL: 2017 South potato planting cultivation techniques and fertilization methods

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