Soil respiration and carbon budget in black soils of wheat-maize-soybean rotation system Long-term fertilization on yield increase of winter wheat-maize rotation system in Loess Plateau dryland of Gansu Ecosystem services of wheat-maize cropland systems in the North China Plain Ammonia volatilization and control mechanisms in the piedmont of North China Plain Soil nitrate leaching and control methods in the piedmont of North China Plain Nitrate leaching characteristics of wheat-corn rotation farmland in Guanzhong area of Shaanxi. Effects of Rotational Tillage and Alternate Border Irrigation on Photosynthetic Characters of Wheat-maize Double Crops Effect of reduced N application on N utilization and balance in winter wheat-summer maize cropping system Comparison of Yield and Light-temperature Resource Use Efficiency between Wheat-Maize and Maize-Maize Cropping Systems Effects of cultivation pattern and nitrogen rate on crop yield and water use efficiency in winter wheat-summer maize system Research on technology of grain production under double-cropping system in Yantai City Crop yield and soil biochemical properties under different nitrogenfertilization and irrigation management schemes Optimum-N application rate to maximize yield and protect the environment in a wheat-maize rotation system on the Guanzhong Plain, Shaanxi Province INTERCROPPING ADVANTAGE AND CONTRIBUTION OF ABOVE- AND BELOW-GROUND INTERACTIONS IN WHEAT-MAIZE INTERCROPPING Short-term response of farmland carbon emission to straw return, two-year plastic film mulching and intercropping Greenhouse gas exchange and comprehensive global warming potential under different wheat-maize rotation patterns EFFECTS OF LONG-TERM LOCATED FERTILIZATION ON SOIL ENZYMATIC ACTIVITIES FOR WHEAT-MAIZE INTERCROPPING IN IRRIGATED DESERT SOILS Efficiency analysis of slow/controlled release fertilizer on wheat-maize in North China Effects of different cultivation patterns and nitrogen fertilization on soil nitrogen supply of in the wheat-maize rotation system Changes of soil microbial biomass carbon and nitrogen, and mineral nitrogen after a long-term different fertilization