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氮、磷、钾被称为植物营养的“三大要素”。作物对这三要素的需要量大,往往因土壤中含量少而影响作物的产量。黔南自治州近几年来通过土壤普查,基本上查清了独山、都匀、贵定、平塘、长顺、三都、龙里、惠水八县和都匀市土壤中营养元素的丰缺情况,为科学种田、合理施肥提供了依据。 一、土壤中三要素的丰缺情况 黔南州位于贵州南部,地势北高南低,海拔330～1961米,地形复杂、地貌多样,山峰林立,沟谷深切,年均温14.99～18.3℃,年
Nitrogen, phosphorus and potassium are called “three major elements” of plant nutrition. Crops have a high demand for these three elements and often affect crop yields due to low levels of soil. Qiannan Autonomous Prefecture in recent years through the soil census, basically identified Dushan, Duyun, Guiding, Pingtang, Changshun, Sandu, Longli, Huishui eight counties and Duyun soil nutrient abundance The lack of conditions for scientific farming, provide a reasonable fertilization basis. First, the abundance of the three elements of the soil Qiannan Prefecture is located in southern Guizhou, the topography of North High South low, 330 to 1961 meters above sea level, complex topography, diverse landscapes, lined peaks, valleys deep, with an average annual temperature of 14.99 ~ 18.3 ℃, year