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一、重视化学肥料,轻视有机肥有人认为化肥施得越多越高产,因此大量施用化肥,结果造成土壤板结,地面盐渍化严重,使发育受阻,叶片老化,营养不良,产量下降。此类棚室应增施有机肥,少施或不施化肥,以减轻肥害。二、结瓜期大量使用二铵黄瓜结瓜期需肥的大致比例为N∶P∶K=5∶2∶6,二铵中以磷为主,磷元素过多,会抑制锌、铁等微量元素的吸收。因此,
First, attention to chemical fertilizers, contempt for organic fertilizer Some people think that the more chemical fertilizer to produce more high yield, so a large number of fertilizer, resulting in soil compaction, serious ground salinization, obstruction of development, leaf aging, malnutrition, production decline. Such greenhouses should be applied organic fertilizer, less or no fertilizer to reduce fertilizer damage. Second, the use of large quantities of fruit during the fruiting period of diammon cucumber fruiting need fructose roughly N: P: K = 5: 2: 6, mainly in the diammonium phosphorus, phosphorus too much, will inhibit the zinc, iron, etc. Absorption of trace elements. therefore,