论文部分内容阅读
复合化肥营养齐全,有效成分含量较高,同时可以满足农作物对多种营养的需要,这是任何单质化肥所不可比拟的。但是,由于复合化肥各种有效成分比例固定,一成不变,不能适应不同作物,不同土壤,不同的农作物生长发育时期对营养物质的需要,往往会造成某种营养元素过剩或不足,这是它的不足之处。为了克服复合化肥的缺点,国内外农学家正在用混合肥料来代替复合肥料。所谓混合肥料,就是两种或两种以上单质化肥;或一种单质化肥与一种二元复合化肥混合制成的。它具有以下三条优点:1.可以灵活调整肥料比例,适应农作物和土壤对化肥的需要。目前,我国土壤普查基本完成,根据土壤三要素余缺情况,可以准确
Compound fertilizer nutrition is complete, high content of active ingredients, and can meet the needs of crops on a variety of nutrients, which is unmatched by any elemental fertilizer. However, due to the fixed proportion of various active ingredients of compound fertilizers, unchangeable, can not adapt to different crops, different soil, different crop growth and development needs of nutrients, often resulting in a nutrient element excess or deficiency, which is its lack Where. In order to overcome the shortcomings of compound fertilizers, agronomists at home and abroad are using compound fertilizers instead of compound fertilizers. The so-called mixed fertilizers, is two or more than two kinds of chemical fertilizers; or an elemental fertilizer and a binary compound fertilizer made. It has the following three advantages: 1. Flexibility to adjust the proportion of fertilizers, crops and soil to adapt to the needs of fertilizers. At present, China’s soil census basically completed, according to the lack of three elements of the soil can be accurate