测土配方施肥与复混肥料

阐述20年来我国土壤养分变化的特点,提出用肥应坚持稳氮、磷,增钾肥、微肥、有机肥。测土配方施肥中,还应注意:土壤障碍因子、某种元素临界法与供应强度,肥料利用率等问题。对专用肥配方、复混肥的浓度、复混肥标准的一些规定从农艺角度提出一些意见。最后介绍几种常见作物的复混肥配方及施肥量、施肥方法。

Formula fertilization by soil testing and compound fertilizers

By analyzing the changing soil nutrients in China over the past 20 years, it is put forward that on the basis of stable nitrogen & phosphorous application, the quantities of potassium, micronutrients and organic fertilizer should be increased. The soil obstacle factor, the critical values of some nutrients and the supply intensity, as well as fertilizer efficiency should be paid more attention in formula fertilization by soil testing. Several suggestions on specialty fertilizer formula, nutrient concentration of compound fertilizer, and terms in national standard are presented from agronomy viewpoint. The fertilizer formulas, applying quantities and methods are given for some common crops.