Economic threshold 第1页

A Study on the Index of Prevention and Control of Ceracris kiangsu Tsai Studies on the damage and economic threshold of weeds to winter wheat STUDIES ON THE WHEAT YIELD LOSS CAUSED BY WEED EUPHORBIA HELIOSCOPIA AND ITS ECONOMIC THRESHOLD SOME STUDIES ON THE YIELD LOSSES AND CONTROLLING THRESHOLD OF SHEATH BLIGHT OF WINTER WHEAT IN SHANDONG PROVINCE STUDIES ON ECONOMIC THRESHOLD FOR PINK BOLLWORM ON COTTON IN HENAN PROVINCE STUDIES ON THE DAMAGE AND ECONOMIC THRESHOLD OF WHEAT SHEATH MINING FLY TO HIGHLAND BARLEY Research on Forage Loss Cansed by the Dociostaurus(S.) Kraussi kraussi (Ingen) and Determination of Economic Threshold A PRELIMINARY STUDY ON THE ECONOMIC INJURY LEVEL AND ECONOMIC THRESHOLD OF BROWN PLANTHOPPER TO SEMILATE NONWAXY RICE STUDY ON THE ASCENDENT CRABGRASS‘‘ ECO-ECONOMIC THRESHOLD MODEL AND ECO-ECONOMIC CONTROL THRESHOLD MODEL IN SUMMER GROUNDNUT FIELD STUDIES ON THE CHEMICAL CONTROL TACTICS AND MIXED ECONOMIC THRESHOLD OF RICE PLANTHOPPER AND SHEATH BLIGHT IN PADDY RICE FIELD STUDY ON THE ECO-ECONOMIC THRESHOLD PERIOD FOR CONTROLLING DIGIT ARIA SANGVINALIS IN SUMMER MAIZE FIELD IN NORTH CHINA A study of outbreak occurrence and economic threshold of downy mildew on Astragalus membranaceus Influence of barnyardgrass (Echinochloa crusgalli) on the growth of double-cropping paddy rice and its economic threshold The predatory function of Amblyseius barkeri on Tetranychus truncates Identification and the characteristic of antagonism of endophytic antagonistic bacteria L3R3-1 from Pinellia ternata STUDIES ON YIELD LOSS AND DYNAMIC ECONOMIC THRESHOLD OF SHEATH BLIGHT OF HYBRID EARLY RICE Economic threshold and critical period of competition of Flaveria bidentis Economic thresholds of the oriental fruit fly, Bactrocera dorsalis ON THE ECONOMIC THRESHOLD OF MULBERRY THRIPS PSEUDODENDROTHRIPS MORI NIWA IN MULBERRY ORCHARD DURING EARLY AUTUMN ECONOMIC DAMAGE TO JAPONICA RICE BY THE SECOND GENERATION POPULATION OF THE WHITE-BACKED PLANTHOPPER Ecoeconomic viewpoint on controlling weeds in the field of summer maize in the North China Effects of Eupatorium adenophorum on the growth of cotton and its economic threshold Effect of Eclipta prostrata on rice yield properties and estimation of economic threshold for control of the weed Inhibitory effects and control efficacy of Paenibacillus polymyxa WY110 on watermelon Fusarium wilt Screen and identification of wheat new resistant germplasms to Fusarium head blight Effects of Eupatorium adenophorum on the eggplant yield and its economic thresholds Influence of Alternanthera philoxeroides on the growth of paddy rice and its economic threshold Influence of barnyardgrass, Echinochloa crusgalli, on the growth and yield of paddy rice and its economic threshold A STUDY ON ECONOMIC THRESHOLD MODEL OF PHYLLOSTACHYS PUBESCENS ECOSYSTEM A STUDY ON THE EFFECTS OF COMPENSATION AND SUPER COMPENSATION OF CHINESE PINE DAMAGED BY CHINESE PINE CATERPILLAR A STUDY ON THE OPTIMIZED MANAGEMENT OF CHINESE PINE CATERPILLAR (DENDROLIMIUS TABULAEFORMIS) Economic threshold of Athetis lepigone at seedling stage of summer maize Eco-Economic Threshold Period for Controlling Weeds in Summer Maize Field of Huang-Huai-Hai Region STUDIES ON THE DAMAGE AND ECONOMIC THRESHOLD OF WHITE-BACKED PLANTHOPPER TO PADDY RICE STUDIES ON THE DEGREE OF INJURY BY ZOKER AND ECONOMIC THRESHOLD OF ITS CONTROL STUDY ON THE OPTIMUM SPRAYING TIME AND ECONOMIC THRESHOLD OF SOYBEAN APHID STUDIES ON THE MIXED DAMAGE AND ECONOMIC THRESHOLD OF SHEATH BLIGHT AND STEM BORER TO HYBRID RICE Study on the Economic Threshold Value for Zokor Control of Economic Forest in Guyuan Replacing Agriculture by Afforestation