题目内容

For Inorganic nitrogen, ______ and nitrate nitrogen can be absorbed by plant directly.

查看答案

搜索结果不匹配？点我反馈

更多问题

Mineral potassium is the main forms of soil K.

There is a potassium deficiency in the Southeast of China.

Potassium is taken up by plants in quantities second only to nitrogen.

Soil Ca concentration will affect soil P availability.