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121. The Nitrogen Repository Spatial And Temporal Changes Of Typical Forest Types Soils On Eastern Slope Of Gaoligongshan Mountains
122. Design And Research On Micro Tillage Machine-cultivated Depth Automatic Control System
123. Effects Of Fertilization Methods On Root Growth, Nutrition Absorption Of Rice And Soil Nutrition Distribution
124. Study On Trace Irrigation Pipe Depths To Growth And Development Of Cucumber Cultivated In Sand、Pumpkin Cultivated In Matrix、Pepper Cultivated In Soil
125. Effects Of Fertilizer Application Depth On Nitrogen Nutrition Of Grapes And Nitrate Nitrogen Transport
126. Analysis And Research Of The Methods And Determination Of Key Factors Of Jujube Forestland Water In Loess Hilly Region
127. Effect Of Tillage Position And Depth Of Soil Erosion On Sloping Land
128. Effects Of Different Straw Incorporation Methods On Soil Fertility And Maize Growth
129. Effect Of Deeply Applying Phosphorus Fertilization Under The Condition Of Deep Scarification In Fallow Period On Soil Water Moisture And Yield Formation In Dryland Wheat
130. Study On Stubble Decomposition Characteristics And Nutrient Release Laws Under Different Stubble-returned Mode In The Loess Plateau Dry Farmland
131. Effects Of Controlled-Release Blending Fertilizer Dosage And Depth On Soil Nutrient And Growth Of Wheat
132. Effects Of Supplemental Irrigation Stage And Depth Of Soil Layers Expected For Water Infiltrating On Grain Yield And Water Use Efficency In Wheat
133. Effects Of Sowing Depth On Grain Yield And Physiological Characteristics Of Summer Maize
134. The Effect Of Depth Of Nitrogen Fertilization On Root Distribution And The Yield Formation In Maize
135. The Effect Of Topsoil Depth And Bulk Density On Soybean Growth And Yield
136. Effect Of Interstocks Length And Depth On Growth And Fruiting In Apple Tree
137. Experimental Research On The Impact Of Straw Returning For The Use Of Soil And Water In The Costal Area Of Yancheng
138. Design And Experiment On The Key Components Of Planter
139. Preliminary Study On Soil Salinity Distribution And The Factors In Hetao Irrigation District
140. Study On Phytolith-occluded Carbon In Soil Under Important Forest Kinds
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