Keep enough seedbed to grow good rape seedlings
The high yield of the vegetables and the management during the seedling stage are the key to raising and raising seedlings of the oilseed rape, which is conducive to wintering the rape and laying a good foundation for the harvest in the coming year. Rape seedlings should pay attention to the following aspects: I. Selection of good disease-resistant varieties The varieties of double-low rape currently suitable for cultivation in our region include Qinyou No. 10, Youyan 52, Peiyou 737, Zhongyouza No. 2 and so on. Second, leave the seedbed. Select the leeward sunny, loose soil, fertile, convenient management block to do the seedbed, according to the seedbed and Daejeon 1:6 ratio reserved. Third, the fine soil preparation, application of base fertilizer seedbed to deep plow, fine hoe, open ditch, in order to facilitate drainage, it is best made of 1-1.2 meters wide sorghum. In combination with site preparation, 200 kg of manure or urine and manure was applied to the seedbed per minute, so that the soil dung was thoroughly mixed and rinsed. Fourth, timely sowing "Bai Lu" before and after the rape is the best period of sowing, nursery should be timely sowing. Seeds were air-dried before sowing. Each seed with 50% carbendazim wettable powder or 40% carbendazim gum suspension 20-30 g was used for seed dressing. This can effectively reduce seedling disease. V. Seedling management After seedling emergence and time seedlings, before the three leaves fixed seedlings, to remove the seedlings, hybrid seedlings, diseased seedlings, weak seedlings, to keep thin, when fixed seedlings per square meter uniform leave 70-100 strains. Three-leaf stage with 15% paclobutrazol 50 g water 50 kg foliar spray, can effectively control the tall plant. 5-6 days before transplanting, apply a "send marriage fat". VI. Strengthen Pest Control The seedling pests of rapeseed mainly include aphids, blue fleas, cockroaches and cabbage caterpillars. They can use 50% fenpropathrin 1000 times solution or 1.8% avermectin 40 ml to spray 50 kilograms of water.
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