Rape seedling transplanting is the main cultivation method of rapeseed cultivation. Nursery transplanting can not only make full use of the pre-winter temperature and light resources, but also match with the late rice stubble, ensuring the agricultural season, and it is beneficial to the high yield of oil rice. The farmer said, “If you have a good harvest, you will lose half the seedlings.†Therefore, nurturing strong seedlings is the foundation for seizing high yield in rapeseed. Cultivate strong seedlings of rapeseeds should be selected from the following five points: good seed selection, field selection, field development, seeding, and seedbed management.
Choose a good variety
It is required to select high-yield, high-quality, and good-resistant varieties of double-low rapeseed, combined with the announcement of the autumn announcement by the Provincial Department of Agriculture and the local production reality, reasonably select the main push varieties, and use high-yield varieties such as Guangyuan 58, Huayouza 13, Huayouza 14 , carefully select varieties to avoid losses.
Pick a good field
It is required that the land with flat terrain, loose fertile soil and convenient drainage and irrigation be regarded as Miaotian. The area of ​​the seedbed is required to be sufficient, and the ratio of the Miaotian to Daejeon area is generally required to be 1:5.
Intensive cultivation
Within one week before sowing, it is required to plough 2-3 times, so that the soil is loose and loose, the topsoil is flat, and the moisture is moderate. At the same time, the combination of cultivating Mushi and decomposing 1,000 kg of organic fertilizer, another application of 50 kg of compound fertilizer, 400 g of Boron (or 1 kg of high-quality borax). According to the standard width of 4 feet, the drawstrings will be ditched and the requirements of the car ditch will be conducive to drainage and seedling management.
Select timely sowing
Vegetable rapeseed rapeseed is planted in the middle and late August; transplanting rapeseed is planted in the middle and early September; and live rapeseed is sown in late September. Transplanting rape seeds per acre sowing 1 kg is appropriate, direct seed oil per acre sowing rate controlled at 0.4 kg is appropriate. After sowing, they should be covered with straw and watered in case of drought to ensure quick and neat seedlings.
Strengthen seedbed management
Seedling age is generally controlled at 30-40 days. Seedbed management is mainly focused on the five key points of drought-resistance, seedling-injection, paclobutrazol, early recovery of seedlings, and prevention of pests. Firstly, it is necessary to timely protect the seedlings after seeding, and timely remove the cover when the rapeseed just emerged, so as to facilitate seedbed management and seedling growth. The second is the one-leaf time seedlings, dredging nest piles, crowded seedlings, in the emergence of the third piece of real leaves when the Dingmiao, usually 70-80 strains per square meter Liu Mu seedling bed Ding Miao 50,000-60,000. The third is the three-leaf period after the Dingmiao, Mu seedbeds with 15% paclobutrazol 50 grams of water 50 kg spray to cultivate strong seedlings. The fourth is the combination of drought-proof pouring and thin water manure after Dingmiao. Before transplanting 6-7 days, Mu catch 3 kg of urea for delivery of martial arts, in order to enhance the root activity, promote early postpartum planted hair.
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