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油菜在生长发育过程中,需要氮、磷、钾、硼、锌、硫等多种营养元素,如果缺少某营养元素,叶片上就会反映出其缺素的症状。对油菜缺素病,应以预防为主,一旦出现缺肥症状,就要立即采取补救措施。一、氮:氮是油菜体内蛋白质、叶绿素、酶和多种维生素的成分,油菜的生长和发育需要大量的氮素营养。据中国农业科学院油料研究所测定,亩产100～150公斤的甘蓝型油菜,每生产50公斤菜籽
Rape in the process of growth and development, need nitrogen, phosphorus, potassium, boron, zinc, sulfur and other nutrients, if the lack of a nutrient element, the leaves will reflect the symptoms of its deficiency. On rapeseed deficiency disease, prevention should be based, in the event of lack of fat symptoms, we must immediately take remedial measures. First, nitrogen: Nitrogen is a rapeseed protein, chlorophyll, enzymes and vitamins composition, rape growth and development requires a lot of nitrogen nutrition. According to the Chinese Academy of Agricultural Sciences Institute of Oil Determination, yield 100 to 150 kg of Brassica napus, each producing 50 kg of rapeseed