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葡萄为例进一步说明果树水肥一体化要注重施用中元素(TE)。葡萄需肥特性:一是产100千克果实,葡萄树需要从土壤中吸收0.3-0.6的N、0.1-0.3千克的P2O0.3-0.65千克的K2O。其比为1∶0.5∶1.2,钾>氮>磷以葡萄是一种喜钾作物。需氮量最多的时期在5~9正是新梢迅速生长,开花和花芽分化时期。三是磷株幼嫩部分含量最高,在前期供磷充足可以促进枝熟和花芽分化,提高授精减少落果。四是葡萄整个期对钾的需求量均较大。葡萄施肥建议:基肥
Grapes as an example to further explain the integration of fruit and vegetable water and fertilizer should pay attention to the application of elements (TE). Grape need fertilizer characteristics: First, produce 100 kg of fruit, grape need to absorb 0.3-0.6 N, 0.1-0.3 kg of P2O0.3-0.65 kg of K2O from the soil. The ratio of 1: 0.5: 1.2, potassium> nitrogen> phosphorus grapes is a hi potassium crops. Nitrogen demand in the period of 5 to 9 is the rapid growth of shoots, flowering and flower bud differentiation period. Third, the phosphorus content of the young part of the highest, sufficient phosphorus in the early stage can promote branching and flower bud differentiation, improve insemination and reduce deciduous fruit. Fourth, the entire period of potassium demand for potassium are large. Grape fertilization advice: basal fertilizer