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油菜移栽实行三项改革,增产增收效果显著,是我县油菜夺得高产的一条成功的经验。 一、改进移栽时间 做到适时早栽 在育好油菜壮苗的基础上,适时早栽是油菜冬发的关键,丰产的基础。据试验,10月下旬移栽的油菜比11月中旬移栽的油菜越冬绿叶数多2.5—3片,每亩增产30—40公斤。在此期间随移栽期的推迟,产量依次递减,大约每推迟移栽5天,减产10％左右。从我县大面积调查情况看,亩产150公斤以上的高产田块,移栽期均在10月15日至11月7日之间,足以说明水田三熟油菜的高产移栽期为10月中下旬。这样,由于移栽季节早,温、光、水条件宜于油菜生长,栽后易返青,新根多、长叶快,使油
Rape transplanting implementation of the three reforms, a significant increase in production and income, is our county rape won a successful experience. First, to improve the transplanting time to be timely and early planting Breeding strong rape seedlings on the basis of timely planting early winter rape is the key to high yield basis. According to the test, the number of transplanted rapeseed in late October was 2.5-3 pieces more than the number of transplanted canola in mid-November, yielding 30-40 kilograms per mu. In the meantime, with the delay of transplanting, the yield decreased gradually, about 5 days postponed for about 5 days, and the yield was reduced by about 10%. According to the investigation of large area in our county, the high-yielding plots with a yield of more than 150 kg per mu are all transplanted between Oct. 15 and Nov. 7, which is enough to show that the high-yield transplanting period of the three-rowed rapeseed in paddy field is October In late. In this way, due to the early transplanting season, warm, light, water conditions should be rape growth, easy to green after transplanting, the new root and more leaves faster, so that oil