我场多是砂岩和砂页岩发育的红砂壤土和砂壤土,含有机质少,保水保肥力差,加以地处气温高、雨量多,土壤风化和淋洗作用强烈,土壤盐基大量淋失,氮、磷、钾有效养分含量低,含速效钾更低,经土壤普查,90%耕地含速效钾在40ppm 以下,而历来种植甘蔗,农家肥施用量较少,更少施用钾肥,因此甘蔗长势差,宿根蔗发苗少,有 My field is mostly sandy loam and sandy loam with sandy shale and sandy loam, with little organic matter, poor water and fertility, high temperature, heavy rainfall, strong soil weathering and leaching, large amount of leaching , N, P, K low available nutrients, including lower available potassium, the soil census, 90% of the available potassium content of 40ppm or less, and always planted sugarcane, farmer fertilizer application less, less application of potassium, so sugarcane Growing poor, Rouse cane seedlings less, there