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油菜收获期,对菜子产量及品质都有影响。收获过早,种子含水量及秕粒多,油菜子的叶绿素含量和游离脂肪酸增加,收获过迟,又会造成落粒损失。一般多按油菜角果及种子成熟程度确定收获期。即以油菜全株或全区植株有70％左右变黄,子粒呈固有色泽为收获标准。这样的标准往往不易掌握,致使收获不及时,造成损失。
Rape harvest, the yield and quality of rapeseed have an impact. Harvesting too early, the seed water content and nodules, rapeseed content of chlorophyll and free fatty acids increased, harvest too late, will cause loss of falling. Generally more by rape cedar and seed maturity to determine the harvest period. That rape whole plant or whole area about 70% of the plants turn yellow, the grain is the inherent color of the harvest standards. Such standards are often not easy to grasp, resulting in the harvest is not timely, resulting in losses.