(1) Winter rapeseed area in the Yangtze River Basin
Fertilization principle
(1) Scientifically fertilize according to the classification of soil nutrient status, current seedling condition and target yield level in the planting area.
(2) According to the soil effective boron condition, supplement the boron fertilizer, pay attention to the use of qualified boron fertilizer.
(3) In the plots where the amount of base fertilizer is insufficient and the fertilizer is not topdressed in winter, the fertilizer is added early, and the nitrogen fertilizer is the main one, and the water-soluble compound fertilizer can be appropriately applied.
(4) For the plots where the amount of phosphorus and potassium is insufficient, spray potassium dihydrogen phosphate at the pod-forming stage.
(5) Pay attention to clearing the ditch against spring stains.
2. Fertilization advice
(1) The production level is below 100 kg/mu: timely application of moss fertilizer, nitrogen fertilizer (N) 2 kg/mu, potassium fertilizer (K2O) 1 kg/mu. The base fertilizer has no field for applying boron fertilizer. In the early stage of bolting to flowering, the surface of the leaf is sprayed with borax 0.2 kg/mu. Fertilizer should be applied in winter and should not be applied according to the weather conditions. The amount of fertilizer should be increased by 30-50% as appropriate, with water and fertilizer.
(2) Production level 100-150 kg/mu: timely application of moss fertilizer, nitrogen fertilizer (N) 2.5 kg/mu, potash fertilizer (K2O) 1.5 kg/mu. The base fertilizer has no field for applying boron fertilizer. In the early stage of bolting to flowering, the surface of the leaf is sprayed with borax 0.2 kg/mu. Fertilizer should be applied in winter and should not be applied according to the weather conditions. The amount of fertilizer should be increased by 30-50% as appropriate, with water and fertilizer.
(3) The production level is 150-200 kg/mu: timely application of moss fertilizer, nitrogen fertilizer (N) 3.0 kg/mu, potassium fertilizer (K2O) 2.0 kg/mu. The base fertilizer has no field for applying boron fertilizer. In the early stage of bolting to flowering, the surface of the leaf is sprayed with borax 0.3 kg/mu. Fertilizer should be applied in winter and should not be applied according to the weather conditions. The amount of fertilizer should be increased by 30-50% as appropriate, with water and fertilizer.
(4) The production level is above 200 kg/mu: timely application of moss fertilizer, nitrogen fertilizer (N) 3.5 kg/mu, potash fertilizer (K2O) 3 kg/mu. The base fertilizer has no field for applying boron fertilizer. In the early stage of bolting to flowering, the surface of the leaf is sprayed with borax 0.3 kg/mu. Fertilizer should be applied in winter and should not be applied according to the weather conditions. The amount of fertilizer should be increased by 30-50% as appropriate, with water and fertilizer.
(2) Northern Spring Rape District
Fertilization principle
(1) According to the regional soil nutrient status, make full use of the results of soil testing and formula fertilization technology, and scientific fertilization.
(2) Nitrogen application in divided doses to prevent post-fertilization.
(3) Replenishing boron fertilizer, zinc fertilizer and sulfur fertilizer.
(4) Add organic fertilizer and use the hydrothermal resources after rapeseed to grow green manure.
(5) Improve the quality of planting and increase the planting density appropriately.
(6) Do a good job in soil collection and conservation, and use water and fertilizer synergy to improve nutrient use efficiency and promote rapeseed growth.
2. Fertilization advice
(1) The production level is below 100 kg/mu: nitrogen fertilizer (N) dosage 6 kg/mu; phosphate fertilizer (P2O5) 3 kg/mu; potassium fertilizer (K2O) 2 kg/mu; zinc sulfate 0.5 kg/mu; borax 0.5 kg/ mu.
(2) Production level 100-150 kg/mu: nitrogen fertilizer (N) 6-8 kg/mu; phosphate fertilizer (P2O5) 4 kg/mu; potassium fertilizer (K2O) 2.5 kg/mu; zinc sulfate 1 kg/mu; borax 0.5 Kg/mu.
(3) The production level is above 150-200 kg/mu: nitrogen fertilizer (N) 8-9 kg/mu; phosphate fertilizer (P2O5) 5 kg/mu; potassium fertilizer (K2O) 2.5 kg/mu; zinc sulfate 1.5 kg/mu; borax 0.75 kg / mu.
(4) The production level is above 200 kg/mu: nitrogen fertilizer (N) 9-11 kg/mu; phosphate fertilizer (P2O5) 5-6 kg/mu; potassium fertilizer (K2O) 3.0 kg/mu; zinc sulfate 1.5 kg/mu; borax 1.0 kg / mu. (Source: Ministry of Agriculture)
This article URL: 2016 spring rapeseed scientific fertilization technical guidance
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