油菜在生长发育过程中，需要氮、磷、钾、硼、硫等多种营养元素，由于不同土壤肥力之间的差异，以及不合理的施肥，往往造成缺素，并从叶片上反映出缺素的症状。对于油菜缺素症，应以预防为主，一旦出现症状，要立即采取补救措施。１缺氮油菜缺氮时，植物体内蛋白质的合成... Rape needs a variety of nutrient elements such as nitrogen, phosphorus, potassium, boron and sulfur in the process of growth and development. Due to the difference between different soil fertility and irrational fertilization, it often causes deficiency and reflects the deficiency from leaves Symptoms. For rapeseed deficiency syndrome, prevention should be the main, once the symptoms, to take immediate remedial measures. 1 nitrogen-deficient rape nitrogen deficiency, plant protein synthesis ...