1Research Advances of Plant Source Extracts Inhibiting TMV in TobaccoHAN Jin-feng, WANG Xiao-jun, LIU Hua-shan, BAI Hai-qun, CHEN Xiu-hua1-62Advances on Serological and Molecular Epidemiology of Bovine Viral DiarrheaWANG Jian-ling, FU Tong, LIU Jie, ZHANG Long-xian, JIAN Fu-chun7-113Current Application Situation and Research Progress on PRRS VaccineWANG Xiao-san, ZHANG Chun-jie, ZHAO Xing-can12-15,254Security of Food and Development of Wheat CultivationLI Chun-xi16-205Study on Cold Resistance of Wheat Root at Seedling StageLI Gan, DONG Na, HU Hai-yan, LI Xiao-li, ZHANG Li-lin, RU Zhen-gang21-256Effects of Hypergravity on MDA Content and CAT Activities of Wheat SeedlingsZHANG Xiao-mei, HAN Chao-gui, LI Guang-lu26-27,377Effects of Potassium Fertilizer Used in Different Periods with Different Amount on Danda17 Maize QualityWANG Chun-lian, JU Fang-cheng28-308Physiological Response of Sorghum with Different Genotypes to Salt StressWANG Shuai, CUI Jiang-hui, XUE Wei, XIE Deng-lei, CHANG Jin-hua31-349Breeding of New Millet Cultivar Yugu 16 with High Yield and Good QualityWANG Su-ying, SONG Zhong-qiang, LIU Jin-rong, YAN Hong-shan, LIU Hai-ping, WANG Shu-jun, GUO Peng-fei35-3710Effect of Combined Use of Organic and Inorganic Nitrogen Fertilizer on Yield, Value and Quality of Oriental TobaccoCAO Jie, YAO Ji-sheng, WEN Yu-zhuan, TIAN Xiang-hua, LA Gui-xiao38-4111Effects of Biomaterial-enveloped Controlled-release Potassium Fertilizer on Leaf Potassium Content, Yield and Quality of Flue-cured TobaccoZHANG Xiang, MAO Jia-wei, HUANG Yuan-jiong, LI Guo-ping, GUI Yan-wei, CHEN Qi-long, XUAN Jun-feng42-4612Difference Analysis of Physical Characteristics of Tobacco Leaves from Different Varieties in YunnanWANG Hao-ya, WANG Li-min, SUN Li, ZHANG Qiang, REN Yi-peng, TIAN Li-mei47-50,5513Repaired Effects of Bordetella HN36 on Flue-cured Tobacco Stressed by QuincloracYI Jian-hua, HAN Jin-feng, LIU Hua-shan, ZUO Tao, WANG Xiao-jun, XU Shu-xia, ZHANG Zhi-yong, YUAN Shi-hao, PU Wen-xuan, WANG Yao-fu51-5514Study on Preparation of Fermented Tobacco Stem Extracts and Application to Reconstituted TobaccoZHANG Bo, JIA Yu-hong, DUAN Li-xiang, ZHENG Lin, WU Chang-wei, YIN Kai-yun56-6015Breeding of High Yield, Stable Yield and Disease Resistant Peanut Variety Luohua No.4ZHOU Yan-zhong, JI Xiao-ling, LI Wei, ZHANG Yao-yun61-62,6616Effect of Fertilizers Application on Corn Yield and Soil Fertility in Sandy SoilLIU Wen, WU Ji-cheng63-6617Estimation of Livestock Manure Nitrogen Load and Research on the Utilization Patterns of Farmland in Zhengzhou CityAN Ke-dong, WANG Yan-yan, LU A-qian, WANG Yan67-7118Nitrogen & Phosphorus Loading and Migration of Farmland Ditch Runoff in Ganjiang RiverXIANG Su-lin, WANG Quan-jin, XU Liu-kai, NIE Fa-hui72-7419Analysis of Transformation and Driving Forces of Agricultural Land in Zhengzhou Based on RSDUAN Jin-long, ZHANG Xue-lei, ZHANG Kai75-7820Heavy Metal Pollution in Sediments of Nanwan Reservoir and Assessment of Its Potential Ecological RiskWU Kun-jie, YANG Dong-hui, LI Rui, PAN Kai-yu, WU Liang-cheng, WEI Ting79-81 