【作者】 潘转霞； 袁钧； 石跃进； 刘巷禄； 李成奇；

【Author】 PAN Zhuan-xia, YUAN Jun, LIU Xiang-lu, SHI Yue-jin, LI Cheng-qi (Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng 044000, China)

【机构】 山西省棉花研究所；

【摘要】 研究了旱地棉田不同年型的生态特点及农艺表现。结果表明,棉花生产中可分为丰、平、歉3类年型。丰产年型(霜前皮棉平均1218.75 kg·hm^-2),年份间差异较小,各生育阶段的气象因素均能满足或基本满足其生育需要,故产量和农艺性状表现突出;平产年型(806.1 kg·hm^-2),年份间差异较大,但各生育阶段的气象因素多居中或优劣互补,因而,产量和农艺性状表现一般;低产年型(霜前皮棉平均395.1 kg·hm^-2),可分为持续干旱和前旱后涝两类,但各生育阶段的气象条件都很差,不能满足生育要求,故产量和农艺性状表现低劣。年型的划分应以产量表现为准,不能以生态条件为依据。更多还原

【Abstract】 The ecological characters and agronomic expressions on rain-fed cotton field in different years was studied in this paper. The results showed that cotton production may be divided into three types of years such as higher yield, normal yield and lower yield. The difference between years changed with the types, so did the meteorological factors in every breeding process, which all influenced the expression of yield and agronomic traits. The author suggested that the years’ division should depend on the yield expression rather than ecological conditions.更多还原