At present, the growth of rapeseed field enters late stage, and vegetative growth and reproductive growth are very vigorous. It is an important period for increasing the seed setting rate, oil content, and grain weight, and is crucial for the formation of yield. Pay attention to doing it well: 1, according to local conditions, Qiao Shi flower fertilizer. It takes about 60 days after the rape begins to mature, and still needs a lot of nutrition. It is an important measure to increase the production of rapeseed in the later period. Application of fertilizers should be based on conditions such as seedling conditions and fertility. The rapeseed growing field can use 0.1kg of potassium dihydrogen phosphate for 50kg of water per acre for extra-root dressing. Even spraying can prevent premature aging, promote the synthesis and transformation of fat in the seed, and increase the oil content of the seed. . The poorly growing rapeseed field can be supplemented with nitrogen fertilizer by applying 1.5-2 kg urea per acre before the beginning of flowering rain. The field of rape premature aging, light leaf color, and early flowering stage can be applied with 2 kg of urea per acre at the final flowering stage, or 0.2 kg of urea per mu, and 0.1 kg of potassium dihydrogen phosphate and 50 kg of water evenly. Combined with the application of boron fertilizer, we must pay attention to prevent excessive application of nitrogen fertilizer in the middle and late period, resulting in plant greed, increased seed pods, reduced fat content. 2, resist drought and stain, prevent lodging. In the middle and late period when rape meets the drought, it is necessary to timely flood and drought, and maintain a certain field humidity; when there is a lot of rain, it is necessary to drain the water in time to reduce the humidity, control the groundwater level, keep the three channels open and prevent the occurrence of waterlogging and diseases. 3, do a good job spraying fertilizer. B. napus hybrids are extremely sensitive to boron, boron deficiency will seriously lead to physiological diseases of rape rape, "atrophy," and only flowering is not strong or less strong, also known as "flowers without real disease." For the field of boron fertilizer application, the later mu is sprayed with 0.1 kg of potassium dihydrogen phosphate and 0.2 kg of urea and 50 kg of urea; for the field without applying boron, the primary fertilizer can be taken before and after winter. Spraying, spraying borax 0.1kg and 0.2kg urea water 50kg per mu. 4, to do a good job of pest control. The main diseases and pests of rapeseeds are sclerotiorum, downy mildew and aphids, especially sclerotia are more common, serious harm, and the most likely to take place in the flowering stage and the development stage of the pods. The sunny yellow leaves of the middle and lower part of the plant should be removed on a sunny day. Bring out of the fields to improve ventilation and light conditions in the fields and prevent diseases. In the early stage of disease, use 50% carbendazim WP 100 g or 40% sclerotate net 100 g water 50 kg for spray control. When the planting rate in the field is about 10%, use 2.5% enemy-killed 20 ml watered 50-60 kg spray to prevent or control, or use it once again to prevent and control. Vaping Kits,tobacco smoking,e-cigarette brand Changzhou Satidi Import and Export Co., Ltd. , https://www.guanjiejt.com