摘要
南方4-6月份葡萄发病情况与此期叶片中磷钾养分含量具有一定的相关性.当叶片中 P 含量达0.14%,K 含量达2.1%时,叶片发病率比对照降低40%左右,果穗发病率降低38%-43%.磷钾肥合理配施,可提高葡萄浆果可溶性固形物0.4%-2.1%,含糖量增加0.23%-2.4%,产量也明显增加.
During April to June,the disease incidence of grape in southern China was correlated with the content of phosphorus and potassium in the leaves.When the content of phosphorus and potassium in the leaves were 0.14% and 2.1%,respectively,the incidence of disease of the leaves and that of the fruits de- creased by 40% or so and 38%-43%,respectively.Applying suitable phosphate and potassium fertilizers,the amount of soluble solid matter and sugar in the fruits increased by 0.4%-2.1% and 0.23%-2.4%, respectively.The yield also increased significantly.
关键词
葡萄
产量
品质
磷素
钾素
抗病性
grape
phosphorus
potassium
disease resistance
yield
quality
