【摘要】 在大田条件下,研究了不同覆盖处理对冬油菜(Brassica rapa)越冬率、生育期、产量构成因素、含油率等的影响。结果表明,在甘肃中、北部进行覆盖处理对保证冬油菜安全越冬、提高产量具有明显作用。所有覆盖处理的越冬率、产量均高于露地栽培。不同覆盖处理的效果有较大差异,以地膜覆盖、秸秆覆盖处理的效果最为明显,覆盖处理使返青期至成熟期各生育时期有提前的趋势,且经济性状均有不同程度的改善。更多还原

【Abstract】 The effect of different covering treatments on winter-survival,growth period,yield components and oil content were studied under field conditions in central and northern region of Gansu.The results showed that the covering treatments had signifincant effect on overwintering rate and yield.The survival rate and yield with covering treatments were higher than the control(CK).Plastic film and wheat straw had more effect than others.Reviving,bolting,initial anthesis,end anthesis,and maturity with covering treatments were earlier than the control.Covering treatments could improve the economic characteristics of winter rapeseed.Among those treatments,plastic film covering is the best and followed by animal manure and wheat straw.更多还原