土壤张力计读数标准—美国Kansas State University
手感法测水分标准—estimating soil moisture—USDA
Fao推荐的84种作物系数
蔬菜施肥技术
根系对水分的吸收
根系养分吸收
DRIP IRRIGATION DESIGN & INSTALLATION GUIDE
有机肥学习资料汇总
Effects of Manure and Fertilizer on Soil Fertility and Soil Quality
植物生长调节剂讲座