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开春以后,油菜营养生长和生殖生长都很旺盛。田间管理以防衰,增角、增粒、增重为中心。一、巧施薹肥油菜蕾薹期是需肥量最多的时期,施用时间,一般在“立春”后薹高7～10厘米时追施。对底肥足,苗肥、腊肥多,油菜长势健壮的可轻施,每亩用4～5担人粪尿加1.5～2公斤尿素掺水浇施;反之,可重施,每亩用人粪尿10～15担加尿素2.5～4公斤,过磷酸钙15～20公斤掺水浇施。二、补施花肥花期追肥,一般采取根外追肥。对长势正常的亩用150克磷酸二氢钾加水50公斤喷施;长势差的亩用250克尿素加200克磷酸二氢钾掺水75公斤喷雾。三、中耕除草春季雨水多、气温回升、杂草生长快,土壤易板结,必须在油菜封行前进行1～2次中耕除草(可结合一次施薹肥),以疏松表土,促进根系生长和控制
After spring, rape vegetative and reproductive growth are very strong. Field management to prevent decline, increasing angle, grain, weight gain as the center. First, clever Shi spathing Fat bud sprouting period is the most needed fertilizer period, the application time, generally in the “beginning of spring” after the top of 7 to 10 cm top dressing. On the end of enough fat, Miao fat, waxy and more, rape robust growth can be light, with 4 to 5 per mu of human excrement plus 1.5 to 2 kg of urea mixed with water pouring; the other hand, Urine 10 ~ 15 Tam plus urea 2.5 ~ 4 kg, superphosphate 15 ~ 20 kg mixed with water pouring facilities. Second, make-up fertilizer flower topdressing, the general take the top dressing. The normal growth of mu with 150 grams of potassium dihydrogen phosphate 50 kg of water spray; poor acres of 250 grams of urea plus 200 grams of potassium dihydrogen phosphate mixed 75 kg spray. Third, the cultivation of weeds in spring and more rain, the temperature rise, weeds grow fast, easy soil compaction, must be rape seal line 1 or 2 times before weeding (with a combination of fertilizer) to loosen the topsoil to promote root growth and control