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油菜在冬前苗期生长过程中,如果遇到外界不良因素的影响,叶片便由绿变红色。油菜发生红叶后,光合作用降低,严重影响产量。因此,必须针对不同红叶原因,对症下药,及时采取补救措施。一、干旱造成淡红叶,油菜苗期若遇干旱,导致植株矮小,叶片变为淡红色,对此要及时浇水抗旱,浇水要采取沟灌,切勿大水漫灌。二、渍害造成暗红色,油菜冬前雨水多,会造成渍水伤僵苗,叶色变为暗红色,对此要采
Rape in winter seedling growth process, if encountered outside adverse factors, the leaves turn from green to red. After the occurrence of red leaves in rape, photosynthesis decreased, seriously affecting the yield. Therefore, we must address the causes of different leaves, the right remedy, take timely remedial measures. First, the drought caused by light red leaves, rape seedlings in case of drought, resulting in short plants, the leaves turn pink, this should be timely watering drought, watering to take ditch irrigation, do not flood irrigation. Second, the stain caused by dark red, rainy rape winter, will cause waterlogging injury seedlings, leaf color turns dark red, which should be adopted