关键词: 保水剂, 保水剂, 土壤, 棉花, 根系, 生长发育, 产量

Abstract: This test starts form the systemic and holistic of drought- resistance in corn and the more important corn four stages， namely: germination period (seeding - Emergence), the seedling (emergence - jointing), the Florescence (tasselling - silking) Pustulation period(pollination - Yield)。Adopting a phased artificial drought and using the trial materials which were good super maize varieties of composite characters，This test comparates drought indicators and maize drought capacity of morphology, developmental science, physiology and other aspects ，measures and analysis easy indicators to establish a reliable, fast index system. Analysising correlation of Maize drought and various indicators through grey correlation analysis, cluster analysis， It clear drought index system and relations a indicator and drought- resistance in corn andlaid the foundation of comprehensive evaluation of different corn varieties drought.