棉花学报2013，Vol.25Issue(4)：316-322,7.
控释氮肥对不同部位棉铃素质及纤维品质的影响
Effects of Controlled Release Nitrogen Fertilizer on Quality of Cotton Bolls and Fiber in Different Fruiting Branches
摘要
Abstract
The objective of this study was to evaluate the differences between urea and controlled release urea in terms of their effects on the qualities of cotton bolls and fiber.The cotton cultivar Lumianyan No.28 was grown under field conditions with three types of controlled release nitrogen fertilizers; 100％ PCU (pitch controlled urea),50％ U (urea) +50％ PCU (pitch controlled urea),and 100％ CRBBF (controlled release bulk blending fertilizer).Compared with the control,those treatments that received controlled release nitrogen fertilizer showed improved quality of cotton bolls and fiber.That is,they showed improved quality of cotton bolls and fiber at the third to fifth fruit node on both middle and upper fruiting branches,an increased number of fruiting branches,greater boll weight at both positions on the plant,and a decreased lint percentage.Applying controlled release nitrogen fertilizer increased the fiber micronaire,significantly improved the fiber strength,and shortened the time to reach fiber maturity,but it did not affect fiber length.These results indicated that 100％ PCU and CRBBF treatments significantly affected the quality of cotton bolls and fiber.关键词
棉花/控释氮肥/果枝部位/棉铃素质/纤维品质Key words
cotton/controlled release nitrogen fertilizer/fruiting-branch position/cotton boll quality/fiber quality分类
农业科技引用本文复制引用
李学刚,孙学振,宋宪亮,孙淑娟,陈二影,张美玲..控释氮肥对不同部位棉铃素质及纤维品质的影响[J].棉花学报,2013,25(4):316-322,7.基金项目
"十二五"国家科技支撑计划(2011BAD11B01,2011BAD11B02) （2011BAD11B01,2011BAD11B02）
山东省现代农业产业技术体系建设专项资金 （）
山东省农业重大应用技术创新项目(2010,2011) （2010,2011）
山东省农业良种工程重大课题(2011LZ、2012LZ) （2011LZ、2012LZ）
