科尔沁沙地休眠燕麦行距和播量效应研究  

Studies on Different Row Spacing and Seed Rates of Oat in Horqin Sandy Land

作　　者：宋卫军[1] 郭来春[2] 任长忠[1,2] 赵国军[2] 胡跃高[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193 [2]吉林省白城市农业科学院,吉林白城137000

出　　处：《中国农学通报》2009年第17期79-83,共5页Chinese Agricultural Science Bulletin

基　　金：国家"十一五"科技支撑计划项目"农田地表覆盖保护关键技术研究"(2006BAD15B02);农业部公益性行业(农业)科研专项(nyhyzx07-009-2)

摘　　要：在科尔沁沙地东部连续两年进行燕麦种植试验,研究行距与播量对休眠燕麦物候期、地上、地下生物量、籽粒产量及植被覆盖度的影响。试验结果表明:2007年各处理中,行距为15cm与播量为150kg/hm2的组合地上生物产量和籽粒产量分别为1520.1kg/hm2、688.9kg/hm2,具有较大优势。2008年,各处理中,行距为25cm与播量为150kg/hm2的组合地上、地下生物产量分别为3200.2kg/hm2、2773.6kg/hm2,籽粒产量为1400.0kg/hm2,具有较大优势。2007年收获后,行距15cm与播量150kg/hm2处理植被覆盖度最高;2008年收获后,播量150kg/hm2处理处理植被覆盖度最大,为79.9%。试验结果表明,行距和播量对燕麦产量及植被覆盖度均有影响,根据降水情况,行距15cm与播量150kg/hm2,行距15cm与播量150kg/hm2的处理在产量和防风蚀方面具较大优势。The aim of present study is evaluation of the effect of different row spacing（15 cm,25 cm and 35 cm） and seed rates（100 kg/hm2,150 kg/hm2 and 200 kg/hm2） on growth,biomass production（above and below ground）,and grain yield of oat in east part of Horqin sandy land,Northern China.The study also aims to determine a combination of row spacing and seed rate for maximum vegetation coverage to prevent wind erosion in the soil.The result indicates that the combination of 150 kg/hm2 seed rate of with 25 cm row spacing perform best with production of 3200.2 kg/hm2 above ground biomass,2773.6 kg/hm2 below ground biomass and 1400.0 kg/hm2 grain yield in 2008.The same combination also shown height vegetation coverage（79.9%） provided by standing stubbles after harvest.And the result indicates that the combination of 150 kg/hm2 seed rate with 15 cm row spacing perform best at production of 1520.1 kg/hm2 above ground biomass,and 688.9 kg/hm2 grain yield in 2007.The result indicates that oat can grow well in sandy soil and it can effectively control wind erosion and improve the local environment.

关 键 词：科尔沁沙地 行距 密度 休眠燕麦 风蚀 

分 类 号：S152.4[农业科学—土壤学] S152.5[农业科学—农业基础科学]