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作物缺钙的对策 三、对策 1.应急对策 (1)叶面喷洒 出现缺钙,可用0.3—0.5％的氯化钙,或0.3％的磷酸钙溶液,在新叶上进行数次叶面喷洒。 (2)追施碱性肥料 出现缺乏症时,可亩施40—60公斤石灰,随浇水施于株间。缺乏较轻时,每亩80公斤全面撒施较好。 (3)补水、减少氮和钾的施用 土壤中即使有钙,土壤水分不足,吸收就显著受阻。因此,干
Countermeasure against calcium deficiency in crops III. Countermeasures 1. Emergency measures (1) Calcium deficiency on leaf foliage, foliar sprays on new leaves may be carried out using 0.3-0.5% calcium chloride or 0.3% calcium phosphate solution . (2) topdressing alkaline fertilizer deficiency, Mushi 40-60 kg of lime applied to the plant with watering. Lack of light, 80 kilograms per mu full spreading better. (3) replenishment, reducing the application of nitrogen and potassium Soil even with calcium, insufficient soil moisture, absorption was significantly blocked. So, dry