近年来,在农业生产中随着氮、磷化肥用量的增加和作物产量的不断提高,加之人们不重视对钾素的投入,致使许多高产田块土壤缺钾严重。氮、磷、钾三要素的比例严重失调,影响了农作物的产量和品质。但目前化学钾肥紧缺,靠化学肥料解决土壤缺钾问题,目前还很困难,因此,开发利用农家钾肥资源尤为重要。 1.单攒草木灰。草木灰中氧化钾含量很、高,小麦茎秆灰为 In recent years, with the increase of the amount of nitrogen and phosphorus fertilizer and the continuous increase of crop yield in agricultural production, people do not pay much attention to the input of potassium, resulting in serious shortage of potassium in many high-yielding soils. The proportions of nitrogen, phosphorus and potassium are seriously imbalanced, affecting the yield and quality of crops. However, due to the shortage of chemical potash and the shortage of chemical fertilizers to solve the problem of potassium deficiency, it is still very difficult at present. Therefore, it is particularly important to develop and utilize the resources of potash. 1. Save the ash alone. Ash content in grass ash is very high, high for wheat stem ash