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钾是作物生长发育的三大要素之一。过去的研究资料指出,小麦对氮、磷、钾的吸收一般是3:1:3的比例。由于土壤中富含氧化钾,因此一般认为土壤不缺钾,无需追钾肥。但是,近几年我们观察,小麦高产田有叶片灰缘无光泽,籽粒灌浆速度慢,千粒重日趋下降,成熟失常,秸秆变软,抗倒力变弱的现象,我们认为这是氮磷钾比例失调,
Potassium is one of the three elements of crop growth and development. According to the past research data, the absorption of nitrogen, phosphorus and potassium in wheat is generally in the ratio of 3: 1: 3. As the soil is rich in potassium oxide, it is generally believed that the soil does not lack potassium, no need to chase potassium. However, in recent years, we observed that there is a matte leaf margin on the high-yielding wheat field, the grain filling rate is slow, the 1000-grain weight is declining, the maladjustment is abnormal, the straw softens and the anti-dumping force weakens. We think this is the ratio of NPK Disorder,