With the growing winter area of ​​rapeseed, the proportion of live rapeseed has increased. The seeding of live rapeseed was later, the effective growth period before winter was shortened, and it was difficult to cultivate strong seedlings before winter. Therefore, it was necessary to do a good job of “four early†management during the seedling period. Miao Ding Miao in the morning. The seeded amount of live rapeseed is larger and sowing is delayed. In particular, the rapeseed in the Sanchai rice field is generally planted at the end of October. This is often due to improper management of the seedlings, fertilizers, and water, which results in the crowding of the seedlings and the emergence of seedlings and weak seedlings. Therefore, rapeseed should be used in rapeseeds. 2 to 3 leaf time seedlings, 4 to 5 leaves when the Dingmiao, transfer and thinning to ensure that the whole seedlings, seedlings per mu of 12,000 to 15,000, to make up for the lack of late-community groups. After fixing the seedlings, use 15% paclobutrazol (50 grams per acre) and spray evenly 50 kg of water to prevent tall seedlings. Cultivate weeds as early as possible. Early cultivating after seedling dregs, ground loose soil, especially rapeseed direct seeding, soil moisture is relatively large, soil compaction, weeds are a serious hazard, the soil between the lines should be loosened and the weeds should be removed. Before the low temperature arrives, a deep cultivator is used and roots are planted to protect the roots of the rapeseed. Weeds and more plots, 20% can be used per acre to take net 80 mg, watered 50 kg, the stem and leaf spray herb, can also be used 12.5 per acre with 50 ml of milk, 50 kg of water Weed stems and leaves evenly spray, the effect is better. As early as fertilizer to promote seedlings. On the basis of applying basic fertilizer, generally apply long-term fertilizer after Qimiao, and apply 4 kg of urea to the water per acre. Each time after seedling, it is necessary to apply seedling fertilizer, and use 250-500 kg of thin livestock and livestock per acre. The manure water was applied; after the seedlings were planted, a strong seedling fertilizer was applied every acre, and 500 kilograms of livestock and manure water was poured. In the application of nitrogen fertilizer, it should also pay attention to increase the application of phosphorus and potassium fertilizer, the general application of superphosphate 20 kg per mu, in mid-December per acre topdressing 1000 kg pig cow dung for wax, in order to improve cold resistance. The best application of fertilizer is to reduce the loss of volatile fertilizer. The live rapeseed needs more boron fertilizer, and the seedling reaction is more sensitive when lacking boron. It can spray 0.5 kilograms of borax fertilizer per acre after fixing the seedlings. Early prevention as early as early flowers. Live rape is weak because of the pre-winter nutrition, and it is prone to early moss early flowering, and it can be controlled according to the situation. Firstly, deep-middle ploughing is performed on well-grown and fertile fields, and a portion of the root system is cut by 7–10 cm of deep cultivating near the pods of the rapeseed, which temporarily inhibits growth. When the rape begins to fall, it is supplemented with appropriate amount of nitrogen fertilizer. The second is that the poorly growing rapeseed can be re-applied nitrogen fertilizer method, can effectively delay the vegetative growth, increase the amount of vegetative growth, prevent the occurrence of early moss. The third is the picking of rapeseed fields that may have been ridiculed years ago. Picking up the moss promptly inhibits the top apex of the plant and causes the nutrient to shift from the main trunk to the lower part of the plant, delaying the birth process. Immediately after picking the moss, 750-1000 kg of livestock manure water per mus, or 5 kg of urea should be poured into the water to promote branching. Fabric With Pvc Coating,Nonwoven Pvc Material Fabric,Medical Protective Clothing Fabric,100% Polypropylene Nonwoven Fabric Shaoxing Weijian Medical Supplies Co.,Ltd. , https://www.wetourmedical.com