EFFECTS OF LONG-TERM FERTILIZATION ON VERTICAL DISTRIBUTION OF MICROORGANISMS IN WHEAT FIELD SOIL Potential Productivity of Light and Heat Resources and Its Utilization in Winter Wheat Field Integrated effect of chemical nitrogen fertilizer in high-yielding wheat field system STUDY ON APPLICATION OF HERBICIDES AND THE SUCCESSION OF WEED POPULATION IN SPRING WHEAT FIELDS Effect of swine manure application on nitrate leaching in winter wheat field in the Yellow River irrigation area of Ningxia, China. Weed communities and eco-niches in wheat fields of the Yellow River irrigation zone of Lanzhou Effects of different fertilization regimes on weed communities in wheat fields under rice-wheat cropping system. EFFECT OF FERTILIZER APPLICATION ON THE OCCURRENCE AND DAMAGE OF WEED IN WHEAT FIELD STUDIES ON THE WHEAT WEEDS COMMUNITIES IN WHEAT FIELDS IN JINGQU BASIN OF ZHEJIANG PROVINCE On the nitrate-N accumulated characteristics in deep soil layer of winter wheat field in Taihang Piedmont N fertilization regulates the response of soil nematode communities to elevated O3 in a wheat field Biological activities of eight herbicides against four grass weeds of wheat fields Species composition and characterization of weed communities in wheat fields in Shandong Province Effects of two years‘ incorporation of leguminous green manure on soil properties of a wheat field in dryland conditions Modeling soil respiration using temperature and soil moisture under alteration of dry and wet at a wheat field in the Loess Plateau, China Ecological stoichiometric characteristics of oasis spring wheat fields under regulated deficit irrigation Biological activities of eight herbicides to three species of fenoxaprop- P-resistant weeds in wheat fields Study on the Carbon,Nitrogen Cycling characteristics of dry farmland ecosystem on Loess Plateau The change of the weed biodiversity in wheat field under a long-term located fertilization The great rainfall effect on soil respiration of wheat field in semi-arid region of the Loess Plateau The seasonal dynamics of soil microorganism, mini-animal and their biochemical activities in the wheat field of northeastern China Effects of enhanced UV-Bradiation on nutrients and accumulation of K of wheat field ecosystem Weed Species Niche in Wheat Fields in Jinhua, Zhejiang Province Species composition and characterization of weed communities in wheat fields in Henan Province Nitrous oxide emissions from winter wheat field in the Loess Plateau Effect of nitrate leaching of winter wheat field based on straw application in the Yellow River irrigation area of Ningxia Land-atmosphere interaction model and observation in Yucheng county Effectsof enhanced UV-B radiation on energy accumulationand energy flow of wheat field ecosystem Effects of enhanced UV-B radiation on population quantity dynamics of weeds,soil macroanimals and wheat aphids in the wheat field ecosystem Biological activity of eight herbicides to eight species of major grasses in wheat fields NO emission from winter wheat fields of rice-wheat rotation ecosystem in southeast China