花生是个需氮较多的作物,每生产100公斤荚果需纯氮5公斤左右,是玉米需肥量的2倍。氮不仅是构成花生根、茎、叶、花、荚果基础物质蛋白质的重要组成成分,而且还是酶、叶绿素的成分。花生植株缺乏氮素,光合效率明显降低,发育迟缓,花芽分化受阻,发棵慢,分枝少,结果少,产量低。虽然根瘤菌能固定氮素,补充部分营养,但是如不适当供给一定量的氮肥,只能维持较低产量水平。 Peanut is a crop that needs more nitrogen. About 100 kg of pods are required to produce about 5 kg of pure nitrogen, which is twice as much as that of corn. Nitrogen is not only an important component of the protein that forms the basic material of peanut roots, stems, leaves, flowers and pods, but also a component of enzymes and chlorophyll. Peanut plants lack nitrogen, photosynthetic efficiency was significantly reduced, stunted growth, flower bud differentiation blocked, slow to send trees, fewer branches, fewer results, low yields. Although rhizobia can fix nitrogen and supplement part of the nutrients, it can only maintain a lower production level if a certain amount of nitrogen fertilizer is not properly supplied.