移栽油菜受不良环境因素的影响,会引起生理性失调,使生长缓慢而形成僵苗;僵苗在冬前不发,越冬期易受冻害,开春后茎秆纤细分枝少,有效角果少,严重影响产量。(1)渍害僵苗渍害主要是排水不良或整地时田间土壤含水量过大,使之糊泥包桨,形成暗渍;渍害导致根系发育不良甚至腐烂,油菜外层叶片变红,内叶生长停滞,叶色灰暗,心叶不能展开。渍害僵苗多发生在稻茬田。预防措施:提早开好三沟,降低地下水位,排除田间暗渍;选择晴天整地,于晴天抢栽大苗,切忌阴雨天抢栽;在施足底 Transplanting rapeseed by the adverse environmental factors, can cause physiological disorders, so that slow growth and the formation of stiff seedlings; stiff seedlings do not send before winter, winter vulnerable to frost damage, stem thin stems after opening spring, effective pod Less, seriously affecting the yield. (1) Zaozheng stiff seedlings are mainly caused by poor drainage or field soil moisture content is too large, mud paste paddle, the formation of dark stains; stain damage lead to poor root growth or decay, rape outer leaves turn red, Growth within the stagnation of leaves, dark gray leaves, heart leaves can not start. Jiaozhuo Miao more occurred in the rice cropland. Preventive measures: early to make a good three ditch, lower groundwater levels, excluding dark stains in the field; choose sunny day preparation, seeding large plants in sunny days, avoid rainy days rush to plant;