论文部分内容阅读
玉米是我国主要的粮食作物。在玉米的一生中,需要积累大量的有机物质,因此需要从土壤中吸收很多的养分,特别是氮、磷、钾等大量元素。科学的施肥不但是提高玉米产量的重要保证,还可以增加玉米植株的抗性,减少病虫害的发生。一、玉米的需肥特点玉米是高产作物,植株高大,吸收养分多,施肥增产效果极为显著。研究表明,玉米每形成100千克籽粒,需从土壤中吸取N2.68千克、P2O51.13千克、K2O2.36千克,为了获得高产必须协调
Corn is China’s major food crop. In the life of corn, it needs to accumulate a large amount of organic matter, so it needs to absorb a lot of nutrients from the soil, especially a large number of elements such as nitrogen, phosphorus and potassium. Scientific fertilization is not only an important guarantee to increase corn yield, but also can increase the resistance of corn plants and reduce the occurrence of pests and diseases. First, the fertilizer needs of corn Maize is a high-yielding crops, tall plants, nutrient absorption, fertilization yield is extremely significant. Studies have shown that for every 100 kg of corn produced, it takes N2.68 kg, 51.13 kg P2O5, and 22.6 kg K2O2 from the soil and must be coordinated in order to achieve high yield