Use the SPAD-502 chlorophyll meter to rapid, on-farm analysis crop chlorophyll status and nitrogen fertilizer recommendation.
利用叶绿素仪SPAD- 502进行田间快速测定，并对作物进行氮肥推荐。
The effect on potato yield and growth characteristics of different fertilization formulas were studied for understanding the effect of soil testing and fertilizer recommendation in potato.
为了解马铃薯测土配方施肥的效果，研究了不同施肥配方对马铃薯生长性状和产量的影响。
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。
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。
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