Based on field fertilizer experiment of cotton under drip irrigation in the area, cotton nitrogen diagnosis and nitrogen fertilizer recommendation with soil inorganic nitrogen quick test was st.
在南疆滴灌条件下进行氮肥大田试验，对应用土壤无机氮测试进行棉花氮素营养诊断及氮肥推荐进行了研究。
Simulated composting was carried out to study the changes of biochemistry and chemical characteristics of the organic manure compost using labelled organic material and inorganic nitrogen fertilizer.
通过室内模拟堆制和同位素交叉标记，研究了以稻草和禽畜粪为主体材料的堆肥制作过程中的生物化学变化特征。
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