Scientific fertilization. According to the application of the base fertilizer, early application of seedling fertilizer, heavy application of open fertilizer, look at the fertilization principle of Miaoqiao Shilei, the base fertilizer should account for 40% to 50% of the total fertilizer, and the seedling fertilizer should account for 20% of the total amount. The opening fertilizer accounts for 30% to 40% of the total fertilizer amount, and the bud fertilizer is applied as appropriate to achieve the application of organic fertilizer and inorganic fertilizer. Generally, the use of pure nitrogen is 12 kg to 15 kg, and the ratio of nitrogen, phosphorus and potassium is 0.5: 0.5 to 0.8. At the same time, pay attention to the application of boron fertilizer, using borax 500g ~ 750g as the base fertilizer, or seedling stage, mossy period with 100g borax into the anti-disease liquid spray.
Comprehensive control of pests, diseases, grass and wetness. After the rapeseed is transplanted, the “three ditch†will be cleaned up in time for the field with high humidity in the field, so that the ditch and the ditch can communicate. It is necessary to timely cultivate and weed, remove old, yellow and diseased leaves, comprehensively control pests and diseases, and do a good job in field management. In the seedling stage, the aphids and cabbage caterpillars are mainly controlled, and the flowering stage is mainly used to control the sclerotinia sclerotiorum and downy mildew, and the green pods mainly control the aphids. Spray a variety of targeted agents + new high-fat film rotation to avoid the emergence of drug resistance.
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