1Research progress on genetics of Cucurbits dwarf traitsSONG Huijuan, GONG Shiqi, LI Hao, ZHU Caihua, TANG Siqi, XIONG Cheng, SUN Xiaowu1-52Research progress of bio-organic fertilizer in potato production and application in ChinaWU Xinjuan6-103Screenings of the identification method at seedling stage in indoor and the resistant germplasm resources of muskmelon to powdery mildew in NingxiaWANG Luxing, WANG Xiaomin, SONG Jianyu, ZHANG Xueyan, TIAN Mei, YU Rong11-154Effects of growth regulators on the growth and development of watermelon seedlingsJIA Yunhe, WANG Xiqing, YAN Wen, FU Yongkai, YOU Haibo, YE Wanjun, GU Wei, LIU Siyu, XU Chunmei, WANG Yu, LIU Qi, ZHAO Dan, LI Yan16-20,595Effect of NaCl on the germination of melon seedZHOU Dan, SHANG Jianli, WANG Jiming, LI Na, MA Shuangwu21-266Study on rapid identification of clubroot resistance of Chinese cabbage at seeding stagesZHAO Yanyan, MAO Lixia, YUAN Yuxiang, YANG Shuangjuan, WEI Xiaochun, WANG Zhiyong, NIU Liujing, LI Lin, ZHANG Xiaowei27-317Effects of leaf spraying biogas slurry fertilizer on the growth and physio-logical characteristics of pepper seedlings under high temperature stressMENG Qingbo, ZHANG Jinwei, MA Wancheng, FENG Qian, TIAN Jia, LI Qingyun32-368Relationship between seed yield and component characters of tetraploid'Green-leaf-edged pakchoi'YIN Linyi, LI Jin, GU Hui37-399Study on dynamic changes of mineral nutritional contents in vegetative organs of Mulgediumtataricum in different growth periodsLI Longmei, NIU Junmei, TIE Ying, ZHAO Xin, WANG Ruigang40-4410Comparison of pollen viability and determination methods of the germ-plasm resources of Allium schoenoprasumGUO Yuanyuan, ZHANG Li, JIANG Yuexi, CHEN Zhendong, HUANG Rukui, SONG Huanzhong, CHE Jianglü, WU Yongsheng, CHEN Qin, LING Huo, ZHANG Yunyun45-4811Efficacy and safety evaluation of seven fungicide for the production of Pleurotus ostreatus fermentation materialsWEN Yamei, SHAO Xinxin, DING Yatong, KONG Weili, MA Lina, ZHANG Hui, DANG Shuai, HUANG Taoge, GUO Yanchun49-5212Study on tomato yield prediction in greenhouse based on wavelet neural networkYIN Yizhi, WANG Yonggang, ZHANG Nannan, LIU Yuhang53-5913Impact of COVID-19 on vegetable market in the first quarter of BeijingZHANG Qian, WANG Ming, HU Yanxiang, WANG Yigang, TAN Yarong60-6514Agricultural socialization service of the watermelon and melon coopera-tive from the perspective of members:Taking Daxing district, Beijing as an exampleWANG Yu, LIU Chao, HU Baogui66-6915Breeding of a new oriental melon variety'Longtian No. 6'ZHAO Dan, WEN Ling, WANG Xiqing, WANG Gang, LI Yang, WANG Zhiwei, ZHANG Zuobiao, LI Yan, YANG Fan, XU Chunmei, XU Jian, FU Yongkai70-7216Breeding of'Nongjiao No. 3' pepperWANG Xiaoping, HE Mei, JIANG Zheng, CHEN Yuanliang73-7617A new pumpkin variety'Jinmili'SHANG Jipeng, JIAO Di, GAO Suyan, JIAO Dingliang, Lü Jinggang77-79 