施肥位置
- 网络fertilizer placement
施肥位置-
基于苜蓿长期连续种植定位试验，研究了不同施肥与采样位置差异对苜蓿草地地上部分生物量和土壤水分的影响。
Impacts of fertilization and sampling position on soil moisture and aboveground biomass of Medicago sativa were studied in a long term , in situ experiment .
-
使用全球定位系统（GPS）采集耕作地块轮廓属性，并在田间施肥作业时，为施肥机提供实时位置信息。
The global positioning system ( GPS ) was used to collect the field outline properties , and to supply timing positioning information for the variable ratio fertilizing .