1Advances on watermelon continuous cropping obstacles and its prevention measures under protective cultivationWEI Xiaoming, ZHAO Yinping, YANG Ruiping1-52Correlation analysis between the soluble solids content of fruit sarcocarp and colour of leaf, flower, fruit sarcocarp on Cucurbita moschataZHOU Junguo, LU Xiaoxiao, YANG Daoyin, NIE Jianman6-83Study on the technology of ultrasonic-assisted polysaccharide extraction of onionYAN Shenghui, GAO Yuhong9-124Effects of deep plowing on the growth and yield of cucumber in greenhouseHU Yun, LI Ming, WANG Liping, YU Cuiling13-175Breeding of high quality middle fruit new seedless watermelon variety‘Guixigua No. 2’LI Guifen, HE Yi, LI Tianyan, LI Zhi, HUANG Jinyan, QIN Sihua, YE Yunfeng, LIU Tangjing, HONG Rixin, Li Wenxin18-21,256Breeding of a new early maturing Watermelon Variety‘Shengxin’HAN Peng, DUAN HuiJun, HAN Jinlu22-257Effects of available potassium in soil and potassium fertilizer application on the growth of watermelonYOU Chun, SUN Xingxiang26-308Research of bee pollination on small fruit type watermelon in vertical-cultureZHANG Baodong31-349Effect of foliar-fertilizer of mid-elements on growth and yield of Chinese chivesWANG Ruijiao, LIU Yongpeng, ZHENG Xiaolan, WANG Yuanyuan, ZHAO Qunfa, SUN Zhiqiang35-3710Comparison experment of melon variety in HenanZHU Yingchun, LIU Junpu, DENG Yun, LI Weihua, AN Guolin, ZHAO Renzong, SUN Dexi38-40