春天:晴天光照强,气温高,光合作用强,作物生长快,对肥料的吸收量大,肥料不易流失,雨天则相反。因此,一般施肥均选在晴天。对根外追肥应选择早上露水刚干,或下午四点以后。看地:砂土地保水、保肥力差,要“少吃多餐”,以减少养分的损失,并多施有机肥和河泥;黄泥土、白鳝泥等缺磷的土壤应增施磷肥;粘重土壤对肥料的分解慢,应将迟效肥和速效肥配合施用;酸性土,可根据作物的需要施用草 Spring: sunny light, high temperature, strong photosynthesis, crop growth, the absorption of fertilizer, fertilizer is not easy to drain, the rain is the opposite. Therefore, the general fertilization are selected on a sunny day. Top dressing on the root should choose morning dew just dry, or after four o’clock in the afternoon. To see: sandy soil water, poor fertility, to “Eat more meals” to reduce nutrient losses, and more organic fertilizer and river mud; yellow soil, eel mud and other phosphorus-deficient soil should be added phosphate fertilizer; sticky Heavy soil decomposition of fertilizer slow, should be combined with the slow-acting fertilizer and quick-release fertilizer; acid soil, according to the needs of crops, grass