论文部分内容阅读
三、土壤中的微量元素硼、钼、锰、铜、锌等微量元素是生物体中酶或某些维生素的成分,也是生物生长发育所必需的营养元素。某些微量元素供应不足,作物就要出现特殊生理症状,产量减少,质量降低,而过多时,又会使作物中毒,因此施用微量元素肥料要通过试验,逐步推广。施肥方法可作基肥、种肥或追肥,也可以浸种、拌种或叶面喷施,但必须在足量氮、磷、钾肥基础上,适量施用微量元素肥料,才能充分发挥其肥效。
Third, the trace elements in the soil Boron, molybdenum, manganese, copper, zinc and other trace elements in the body of enzymes or some vitamins composition, but also the biological growth and development of essential nutrients. Due to insufficient supply of some trace elements, crops will have special physiological symptoms, yield will decrease and their quality will decrease. When too much, they will poison crops. Therefore, the application of trace element fertilizers should be gradually promoted through experiments. Fertilization methods can be used as a base fertilizer, fertilizer or dressing, but also seed soaking, seed dressing or foliar spray, but adequate nitrogen, phosphorus and potassium fertilizer, based on the appropriate amount of trace element fertilizer in order to give full play to its fertilizer effect.