论文部分内容阅读
滨海盐土原为供钾能力较高的土壤类型，但由于高产喜钾作物的推广．雨水造成的损失以及钾素投入少等原因．土壤中有效钾含量不断下降，大丰市缺钾面积迅速扩大，成为作物优质高产的限制因子。研究表明：秸草地还田、施用无机钾肥及其他农业措施有利于土壤中钾素的平衡和作物高产。
Coastal saline soil was originally a high available soil type of potassium, but due to the promotion of hi-yielding hi potassium crops. Rain caused by the loss of potassium and less investment and other reasons. The available potassium content in soil is declining continuously, and the area of potassium deficiency in Dafeng City rapidly expands and becomes the limiting factor of high quality and high yield of crops. The results showed that straw returning to field, application of inorganic potash fertilizer and other agricultural measures were beneficial to the balance of potassium and high crop yield in soil.