Guiding opinions on the scientific fertilization of wheat and rapeseed in late autumn in 2015

In order to comprehensively promote the popularization of fertilization techniques for wheat and rapeseed soil fertilization, give full play to the supporting role of soil testing and formula fertilization technology in promoting the sustained and stable increase of wheat and rapeseed in our city, realizing cost-effectiveness and increasing farmers' income. According to the production of wheat and rapeseed in our city. The situation is formulated this year, wheat, rapeseed scientific fertilization guidance.

First, wheat fertilization guidance

(1) Basic principles

1. Add organic fertilizer to implement the combination of organic and inorganic straw.

2. 50% of the total amount of nitrogen fertilizer is used as top dressing as 50% of base fertilizer; all phosphorus and potassium fertilizers are used as base fertilizer.

3, soil nutrient phosphorus and potassium relative balance plots use 40% (20-10-10) formula fertilizer soil nutrient moderate potassium deficiency plots use 40% (20-8-12) formula fertilizer, soil nutrient moderate phosphorus deficiency plot selection 40% (20-12-8) formula fertilizer soil nutrient severe potassium deficiency plots use 40% (20-6-14) formula fertilizer.

(2) Fertilization recommendations

1. The production level is 300-400 kg/mu: nitrogen fertilizer (n) 10-13 kg/mu, phosphate fertilizer (p2o5) 3-5 kg/mu, potash fertilizer (k2o) 3-5 kg/mu.

2, the production level of 250-300 kg / acre: nitrogen fertilizer (n) 8-11 kg / mu, phosphate fertilizer (p2o5) 3-5 kg ​​/ mu, potassium fertilizer (k2o) 3-5 kg ​​/ mu.

(3) Specific points

1. High-yield field (40%) formula fertilizer 30-35 kg/mu for base fertilizer 46% urea 8-10 kg/mu for top dressing.

2, low-yield field (40%) formula fertilizer 25-30 kg / mu for base fertilizer 46% urea 7-9 kg / mu for top dressing.

3. Apply 1 kg of zinc sulfate or 200 g of 25% large zinc per acre in the zinc-deficient field.

Second, rapeseed fertilization guidance

(1) Basic principles

1. Add organic fertilizer to promote organic-inorganic compounding and straw returning; supplement boron fertilizer; appropriately reduce the application rate of nitrogen fertilizer base and increase the proportion of moss fertilizer.

2, 50% of the total amount of nitrogen fertilizer for base fertilizer application, 20%-30% for wintering seedling fertilizer, 20%-30% for manure fertilizer; 60% for potassium fertilizer for base fertilizer application, 40% for manure fertilizer; phosphate fertilizer and boron fertilizer for base fertilizer Apply.

3. Soil nutrient phosphorus and potassium relative balance plots use 42% (21-11-10) formula fertilizer, soil nutrient moderate potassium deficiency plots use 42% (21-9-12) formula fertilizer, soil nutrient moderate phosphorus deficiency plots 42% (21-13-8) formula fertilizer was used in 42% (21-13-8) formula fertilizer soil nutrient severe potassium deficiency plot.

(2) Fertilization recommendations

1. The production level is 200 kg/mu: nitrogen fertilizer (n) 10-11 kg/mu, phosphate fertilizer (p2o5) 4-6 kg/mu, potash fertilizer (k2o) 4-6 kg/mu.

2, the production level of 150-200 kg / mu: nitrogen fertilizer (n) 8-10 kg / mu, phosphate fertilizer (p2o5) 3-5 kg ​​/ mu, potash fertilizer (k2o) 3-5 kg ​​/ mu.

(3) Specific points

1. High-yield field (42%) formula fertilizer 35-40 kg/mu for base fertilizer 46% urea 8-10 kg/mu for topdressing 60% potassium chloride 3-4 kg/mu for manure.

2. For middle-aged fields, (42%) formula fertilizer 30-35 kg/mu for base fertilizer 46% urea 7-9 kg/mu for topdressing 60% potassium chloride 2-3 kg/mu for manure.

3. Bored in a field of boron, 1 kg of borax or 15% of boron with a capacity of 200-300 g per acre.

All localities should organize special classes, give play to the role of science and technology demonstration households, and do a good example of formula fertilization demonstration tablets. It is necessary to paste the soil testing formula fertilization recommendation card and fertilization information in the concentrated activities of farmers to facilitate direct fertilization by the masses. For the farmers in the raw cotton producing areas, it is necessary to overcome the light base application and heavy pursuit of the idea to pay attention to the application of wheat, rapeseed base fertilizer, deep application, and heavy application of base fertilizer. (Qianjiang Daily)

This article URL: Guiyang autumn sowing wheat and rapeseed scientific fertilization guidance

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