1. Before the broadcast, pharmacy seed dressing Before rape sowing, 3% phoxim or 1 to 1.5 kg chlorpyrifos granules can be mixed with rapeseed seeds and 2 to 3 kg of wheat bran or dry fine soil. With the sowing, the seedlings of rape can be controlled effectively. Preventing and controlling underground pests can also be used as both an effective and a preventive measure against pests and diseases of rapeseed. 2. Autumn seedlings prevent pests and weeds in time Rape seedlings in winter before the seedling stage mainly include rapeseed aphids, black-leafed leaf aphids, blue-jelly beetles, diamondback moth, etc. The diseases mainly include downy mildew, etc. The weeds mainly include sophora davidianus, ion grass and so on. For rapeseed downy mildew disease rate of more than 10% of the plots, the pesticide can be used 50% carbendazim 500 times spray control. For rape insect pests, 20% butyl sulfide carbofuran can be sprayed in 1500-2000 times in a timely manner. Weeds can be combined with row cultivators in time to carry out artificial rakes to ensure the safety of rapeseeds. How to Control the Diseases and Insect Pests of Autumn Sowing Rapeseed Diseases and Pests in Autumn 3. Do a good job in the anti-freezing work of rape before winter to ensure safe rape winter Rapeseed can be used for the following measures: soil protection. To cultivate the rapeseed before winter, improve the cold resistance ability of rapeseed. In combination with cultivator roots, soil should be 7-10 cm thick. Straw cover between the rows. Before wintering, cover a layer of corn stalk between rapeseed rows, which can increase the soil temperature by 2°C~3°C, and play a role in keeping the cold warm. Do a good job of winter irrigation. Pre-irrigation of cold air before the advent of cold air can significantly reduce the temperature, to ease the degree of frost damage. Shaanxi Changsheng Industrial Co., Ltd. , https://www.cncsbio.com