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手机尾号为1962的用户问:叶面肥怎么施用效果最好?专家解答:(1)最佳浓度。喷施叶面肥把握最佳浓度,可达到事半功倍的效果。浓度过高,易发生肥害或毒素症,浓度过低,达不到施肥的目的。常用肥料最佳浓度为尿素0.5%~1%,磷酸二铵0.2%~1%,氯化钙0.3%~0.5%,硫酸锌0.05%~0.2%。(2)最佳时期。一般蔬菜苗期、始花期或中、后期等需肥关键期是喷施叶面肥
Mobile phone tail number for 1962 users Q: How to use the best foliar application? Expert answers: (1) the best concentration. Spraying foliar grasp the best concentration, can achieve a multiplier effect. Concentration is too high, prone to fat or toxins, the concentration is too low, not the purpose of fertilization. Commonly used fertilizer best concentration of urea 0.5% to 1%, diammonium phosphate 0.2% to 1%, calcium chloride 0.3% to 0.5%, zinc sulfate 0.05% to 0.2%. (2) the best time. General vegetable seedling, flowering period or in the late period such as fertilizer critical period is the foliar spray