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防治葡萄黄叶病有新招黄叶病是葡萄栽培上常见的缺铁生理病害。经重复试验，对发生黄叶病的葡萄进行土壤调酸，可有效降低局部土壤的ｐＨ值，使土壤中被固定的部分无效铁转变为有效铁。承德县农业局生产的秧床育秧调酸剂，由硫酸和填充料按比例配制而成，每袋重２５００克...
Prevention and treatment of grape yellow leaf disease has a new trick Yellow leaf disease is common on the viticulture of iron deficiency physiological diseases. After repeated experiments, soil acidification of grape with yellow leaf disease can effectively reduce the pH value of local soil and convert some of the invalid iron fixed in the soil into effective iron. Chengde County Bureau of Agriculture seedling bed seedling transfer agent produced by the proportion of sulfuric acid and filler preparation, weight 2500 grams per bag ...