近年来,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。目前化学钾肥紧缺,必须开发利用农家钾肥资源。 1.收集草木灰 草木灰中氧化钾含量很高:小麦茎秆灰为13.6％,棉秆灰和稻草灰分别为11.2％和8.1％,玉米穗轴灰高达17.25％。草木灰可做基肥、追肥、叶面肥。收集利用草木灰、窑灰、灶灰、火土灰等,是开辟钾肥资源的重要途径,但是田间收获的秸秆不要在野外燃烧,否则得不偿失。 2.秸秆还田 作物秸秆含钾量较高,是农家钾肥 In recent years, many of the high-yielding fields have serious potassium deficiency and the proportion of nitrogen, phosphorus and potassium is seriously imbalanced, affecting the yield and quality of crops. The current shortage of chemical potash, potash fertilizer resources must be developed and used. 1. Collection of ash Ash content in wood ash is high: 13.6% for stalk ash, 11.2% for straw ash and 8.1% for straw ash, and 17.25% for ash of corn cob. Ash can be done grass, top dressing, foliar fertilizer. Collection and utilization of ash, kiln ash, stove ash, fire ash, etc., is an important way to open up potash resources, but the field harvest straw do not burn in the wild, or more harm than good. 2. Straw straw crop high potassium content, is a farm potash