垄沟种植对老芒麦种子产量及组分的影响  

Effect of Ridge and Furrow Planting System on Seed Yield and Seed Yield Components of Elymus sibiricus L.

作　　者：李春荣[1,2] 李向林[2] 徐柱[3] 何峰[2] 万里强[2] 苏德荣[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083 [2]中国农业科学院北京畜牧兽医研究所,北京100193 [3]中国农业科学院草原研究所,内蒙古呼和浩特010010

出　　处：《中国草地学报》2010年第5期40-46,共7页Chinese Journal of Grassland

基　　金：公益性行业(农业)科研专项(NYHYZX07-022);国家科技支撑计划(2006BAD16B05)

摘　　要：针对老芒麦种子产量低下问题,在北方农牧交错区进行了垄沟集雨种植对老芒麦种子产量影响研究。结果表明:垄沟种植可以提高沟内老芒麦生殖枝密度、每生殖枝上小穗数、每小穗上种子数和种子千粒重。MR60(垄∶沟比例为60cm∶30cm)、MR30(垄∶沟比例为30cm∶30cm)和CK(传统平作)的生殖枝密度分别是411株/m2、576株/m2和284株/m2,MR60和MR30处理的生殖枝密度分别提高45%和103%(以占地面积计算);生殖枝上小穗数和小穗上种子数变化较小;MR60、MR30和CK的千粒重分别是3.51g、3.09g和2.99g;种子产量分别达到1.11t/hm2、0.82t/hm2和0.44t/hm2。Effect of ridge and furrow planting system on seed yield of Elymus sibiricus L.was studied in northern farming-pastoral zone of China to resolve low seed yield.The results showed that ridge and furrow planting system can enhance fertile tiller density,spikelets per fertile tiller,seeds per spikelet and thousand seed weight in different degrees.The fertile tiller density of MR60（the width of ridge and furrow is 60cm and 30cm）,MR30（the width of ridge and furrow is 30cm and 30cm）and CK（flat planting）separately amounted to 411,576 and 284 plants/m^2,the fertile tiller density of MR30 and MR60 were increased by 102% and 44% respectively.Spikelets per fertile tiller and seeds per spikelet varied lightly.Thousand seed weight of MR60,MR30 and CK was 3.51g、3.09g and 2.99g.The seed yield of MR60,MR30 and CK reached 1.11t/hm^2、0.82t/hm^2 and 0.44t/hm^2.

关 键 词：垄沟种植 老芒麦 种子产量 

分 类 号：S543.048[农业科学—作物学]