First, the ditch to prevent stains. Clean up "Three Ditches" in time to ensure smooth drainage and ensure that no water accumulates on the ground after the rain. The second is to apply flowering moss early. Generally before the beginning of March, the rain and crevices are topped with 45% compound fertilizer 15 kg plus urea 7.5 to 10 kg. The topdressing amount of various types of fields should be flexibly controlled according to the seedlings and growth conditions of rape, and the need to construct a reasonable group structure should prevail. In addition, hybrid rapeseeds planted in our province are all sensitive to boron. If boron is not applied at the seedling stage, boron fertilizer should be sprayed on buds and early flowering stages in combination with pest control to avoid rape. "Treatment, improve the seed-setting rate. If it has been applied during the seedling stage or basal fertilizer, it may not be applied. For dry lands with higher groundwater, no matter whether or not the boron fertilizer was applied during the seedling stage, high-efficiency instant boron fertilizers were applied to the roots during flower buds. The third is foliar dressing. Rape from the convulsions to the flowering period, vegetative growth and reproductive growth go hand in hand, which requires a large amount of fertilizer, if the fertilization is inadequate crops easily defertilizer, this period can be combined with pest control plus spray 2 to 3 times the leaf fertilizer, per acre times Huilongbao 80g Ganopefeng 40g (or 98% potassium dihydrogen phosphate 200g) plus Pengfei (20.5% boron water-soluble powder) 30g evenly sprayed. The interval between the previous spraying and the previous spraying is 7-10 days, which can increase the absorption capacity of rapeseed root and increase the grain weight. Fifth, pest control. In March, the prevention and control of “one pest and one disease†(ie, Sclerotinia sclerotiorum, rapeseed worms) should be focused on to reduce the damage caused by pests and diseases. The prevention and treatment of rapeseed sclerotinia can be used in the early stage of flowering of rapeseed (a branching and flowering branching rate of 20 to 30%) and flowering stage (a secondary branching and flowering branching rate of about 30%). 50% Procymidone WP 50-75g, or 50% Kaiser (Bosminamide) 30-50g, or 40% Sclerotium Net 120-150g, motorized sprayer for water 30kg, manual sprayer Water 50-60 kg evenly sprayed, and the whole plant should be applied uniformly to improve the control effect. At the time of application, 22% Teflon (5 to 10 ml) or 70% (40% to 6 g) of Amelan can be used to simultaneously treat rape locusts. The fourth is to control weeds. Since March, rape has basically entered the flowering stage of bolting. In order to avoid phytotoxicity, rapeseed fields are only recommended for chemical control of weeds to ensure the safety of rapeseed growth. Control to see Acacia, Poa, Grass, etc., can be in the weeds 3 to 5 leaf stage, mu with 10.8% efficient cover grass can 60 ml, or 5% lean konjac grams 70 ~ 90 ml, 30 kg of water on Morning dew dry fine water spray. good frozen leather jacket Leather Jacket,Frozen Leather Jacket,Fresh Leather Jacket,Delicious Frozen Leather Jacket Zhoushan Junwei Aquatic Products Co., Ltd. , https://www.junweiaquatic-intl.com