关键词: 地力贡献, 地力贡献, 长期定位试验, 培肥技术, 砂姜黑土

Abstract: Using a planstic rain shelter to keep off precipitation, a field experiment on the interval of anthesis and silking (ASI), nutrition organs and yield component characters of the eight supersweet corn cultivars was conducted under different water stress treatments by controlled irrigation. The results showed that ASI of the different cultivars were delayed at different degree, nutrition traits and yield component characters gradually declined under drought stress. the characters of the eight supersweet corn cultivars under mild water stress were influenced more heavy than those of under light water stress. Compered with control, the characters of partial supersweet corn cultivars under mild water stress were significant or more. The comprehensive evaluation to drought tolerance identification of supersweet corn cultivars was concluded through ASI, yield and their drought tolerance coefficients combined with nutrition organs and yield component characters. Yuetian 13 and Zhengtian 38 were the most drought-tolerance and the recommended cultivars as drought tolerance on agricultural production.