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耕种灌漠土壤富含农作物所需的钾素。我县长期采用小麦与玉米连续间作带种,作物从土壤中携走的钾素养分愈来愈多,而土壤中的钾仅靠施用有限的有机肥和部分秸秆、根茬还田来补充,明显表现出亏损的趋势。针对这一问题,我们对本县耕种灌漠土速效钾变化动态进行了定点定位监测,并开展了小麦施用生物钾的效果试验研究。一、材料与方法1.土壤速效钾动态监测:1983年土壤普查结束后,从1984年开始分别在灌漠厚立土、灌漠轻盐潮
Cultivation of desert soil rich in crops required for potassium. County long-term use of wheat and corn continuous intercropping, crops from the soil carry more and more potassium nutrients, and the soil of potassium only by applying limited organic fertilizer and some stalks, stubble field to replenish, Clearly showed a loss trend. In response to this problem, we conducted a fixed-point positioning monitoring of the dynamic changes of available potassium in cultivated irrigated desert soil in our county, and carried out experimental research on the effect of applying bio-potassium to wheat. I. Materials and Methods 1. Dynamic Monitoring of Available Potassium in Soil: After the conclusion of the soil survey in 1983, beginning in 1984,