摘要
选用农八师试验区目前三个主栽棉花品种，进行膜下滴灌棉花各生育时期干物质积累与耗水量关系的研究，分析干物质积累、水分消耗的变化规律和二者之间的相关性。研究结果表明，各生育时期干物质积累和水分消耗变化趋势符合“S”型变化规律，干物质积累、水分消耗最大值均出现在花铃期，其日积累量和消耗量分别为1.52—2．95g和6．84—7．14mm。从各生育时期干物质日积累和日耗水量拟合结果来看，其R^2值均大于0．95，F检验值达到显著水平，说明干物质的积累量和水分的消耗具有极显著的相关性。
Three main cotton varieties in pilot area were selected in an experiment to study the relations and analyze the correlation, change pattern between dry matter accumulation and water consumption of the cotton under film mulch and drip irrigation at different growth stages. The results showed that the change trends accorded with the ＂S＂ shape, and the maximum of dry matter accumulation and water consumption were 1.52 - 2.95 g and 6.84 -7.14 mm, which appeared both in the stage of cotton flowering and boll. The fitting results of growth rate between dry matter accumulation and water consumption showed that its R^2 values were greater than 0.95 and F-test value reached significant levels, and the dry matter accumulation and the consumption of water had significant correlation.
出处
《干旱地区农业研究》
CSCD
北大核心
2009年第5期83-87,共5页
Agricultural Research in the Arid Areas
基金
国家科技支撑计划-棉花水肥高效利用调控管理技术研究(2006BAD21B02-2)
石河子大学高层次人才科研启动资金专项(RCZX200722
RCZX200728)
关键词
膜下滴灌
棉花
干物质积累
耗水量
film mulch drip irrigation
cotton
dry matter accumulation
water consumption
