Key points of Rape Cultivation

1. Timely sowing and cultivation of strong seedlings: the seedlings in the middle reaches of the Yangtze River should be sown in the first and middle of September, and the ratio of seedling field to field is 1:6. Large and strong seedlings should be cultivated. 150 ppm Paclobutrazol or 18 ppm Uniconazole should be sprayed at the three true leaf stage, and the seedling age is 30 days. Direct seeding from late September to mid October.

2. Timely early planting and reasonable close planting: under the condition of medium fertility level, the reasonable density of seedling transplanting is about 10000 plants per mu, and 7500 plants per mu under the condition of sufficient fertility and early planting, and 12000-14000 plants / mu for direct seeding.

3. Scientific fertilization, early growth and stable growth: heavy application of base fertilizer, 50 kg of imported compound fertilizer per mu and 1 kg of effective boron fertilizer per mu; Topdressing of seedling fertilizer, timely Topdressing and raising seedling fertilizer after transplanting survival, and about 15 kg urea per mu according to the situation of seedlings; for spring use of wax fertilizer, apply 10 kg urea per mu according to seedling potential at the end of January, and pay attention to applying boron fertilizer. If the base fertilizer is not applied with boron fertilizer, it should be sprayed with boron fertilizer (concentration is 0.2%).

4. Deep furrow and high ridge, pest control and disease prevention: timely clearing ditches after rape sowing or transplanting, matching three ditches, smooth drainage and reducing wet damage. At the initial and full flowering stages, the Sclerotinia sclerotiorum was sprayed with 100g of huiheling and 50kg of water per mu; aphids and Pieris rapae were well controlled at seedling and overwintering stages.

5. Rape harvest in time, high yield and harvest: the suitable harvest time is about 80% of the field pods are light yellow, and most of the pods on the main axis are dark brown.