论文部分内容阅读
「两增、三改、两防、一优」可明显提高沙壤地水稻产量一、“两增”（一）增施粗肥，培肥地力滦南县土壤以沙壤土为主，有机质含量低，保水保肥性能差，增施粗肥可明显改善土壤理化性状，增加蓄水保肥能力，改善水稻生长生态条件。据测定，亩底施优质粗肥２５００～３００...
“Two increases, three changes, two defenses, one excellent” can significantly improve the yield of rice in sandy loam One, “two increases” (A) increase of crude fat, fertility Luannan County, sandy loam soil, low organic matter content , Water and fertilizer performance is poor, the addition of coarse fat can significantly improve soil physical and chemical properties, increase water storage and fertilizer, improve rice growth ecological conditions. According to the determination, Mu quality Shi thick fertilizer 2500 ~ 300 ...