论文部分内容阅读
钾是作物的主要营养元素之一。每生产100斤产品,不同作物需要吸收氮(N)、磷(P_2O_5)、钾(K_2O)的数量(斤)是不同的。据国内研究的结果大体是:
Potassium is one of the major nutrient elements of crops. For each 100 kg of product produced, the amount of nitrogen (N), phosphorus (P 2 O 5), and potassium (K 2 O) needed to be absorbed by different crops is different. According to the results of domestic research is generally: