论文部分内容阅读
随着复种指数的提高和杂交水稻、杂交油菜等高产作物每年大面积种植,寿县土壤养分含量,由1982年全国第二次土壤普查的缺磷、少氮、富钾,发展到现在缺钾严重。 目前寿县采取三条措施控制土壤钾素下降:一是秸秆还田。随着农民生活水平提高,煤、电使用逐年普及,许多农民买了小型拖拉机,盖了瓦房,给秸秆还田创造了条件。据统计,全县年秸秆还田面积已达30万亩以上,还田总量3万多吨.折合K_2O约770吨。
With the improvement of multiple cropping index and the large-scale planting of high-yield crops such as hybrid rice and hybrid rapeseed annually, the soil nutrient content of Shouxian was developed from the lack of phosphorus, nitrogen and potassium in the second national soil survey in 1982 to the current shortage of potassium serious. Shouxian currently take three measures to control the decline of soil potassium: First, straw returning. With the improvement of peasants’ living standards, the use of coal and electricity has been popularized year by year. Many peasants bought small tractors and covered the tile-roofed houses to create conditions for returning straw to the soil. According to statistics, the area of straw returned to the country has reached more than 300,000 mu and the total amount of returned straw is more than 30,000 tons, equivalent to about 770 tons of K_2O.