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对黑穗醋栗土壤施K肥和叶面喷施K肥研究表明,施K肥可以明显增加黑穗醋栗叶片中K素含量,并且增加叶片中N素含量,降低P、Mg含量,使树体营养趋于平衡,改善树体潜在缺K问题.从改善树体营养效果来看,土壤施K以每株0.15kg~0.3kg为宜,且萌芽前施入效果明显;叶面喷施效果次于土壤施肥,适宜浓度为0.5%~1%K2SO4。
The results showed that application of K fertilizer could obviously increase the content of K in leaves of black currant and increase the content of N in leaves and the content of P and Mg Tree nutrition tends to balance and improve the tree’s potential shortage of K problems. From the perspective of improving the effect of tree nutrition, soil application of K was preferably 0.15kg ~ 0.3kg per plant, and the effect of spraying was obvious before germination. The effect of foliar spraying was inferior to that of soil fertilization, and the suitable concentration was 0.5% ~ 1% K2SO4.