条深旋耕作方式对早春玉米产量性能的影响  

Effect on Yield Performance of Early Spring Maize in Strip Deep Tillage

作　　者：李立娟[1,2] 崔彦宏[1] 李琦[2] 薛庆林[1] 赵明[2] 

机构地区：[1]河北农业大学农学院,河北保定071001 [2]中国农业科学院作物科学研究所/农业部作物生理生态与栽培重点开放实验室,北京100081

出　　处：《作物杂志》2011年第5期96-99,共4页Crops

基　　金：国家"十二五"科技支撑计划项目(2011BAD0000);中央级公益性科研院所基本科研业务费专项

摘　　要：以益农103为试验材料,选择条深旋耕、普通旋耕和免耕3种耕作方式,比较分析了不同耕作方式对早春季玉米产量性能的影响。结果表明:条深旋耕条件下玉米的产量比普通旋耕和免耕分别增产11.1%和17.6%,干物质产量分别增加8.5%和12.9%。条深旋耕条件下开花后叶面积指数(LAI)较长的高值持续期有利于干物质积累量的增加。群体光合势(LAD)、平均作物生长率(MCGR)、平均叶面积指数(MLAI)、平均净同化率(MNAR)、开花期穗位叶绿素含量(SPAD)和净光合速率(Pn)的增加提高了作物的光合速率和光合产物向子粒转运的速率,同时也提高了穗粒数和千粒重。说明条深旋耕作措施有利于改善早春玉米群体产量性能,从而获得较高的产量。The yield performance of early spring maize in three cultivation ways,including strip deep tillage,traditional tillage and no-tillage,was studied using ＂Yinong103＂ as material.The results showed that the yield in strip deep tillage increased by 11.1% and 17.6%,respectively,dry matter increased by 8.5% and 12.9%,respectively,comparing to that of the conventional tillage and no-tillage treatment.Leaf area index（LAI） after flowering under long duration benefited for increasing dry matter accumulation in strip deep tillage.The increases of groups leaf area duration（LAD）,mean crop grow rate（MCGR）,mean leaf area index（MLAI）,mean net assimilation rate（MNAR）,flowering ear leaf of the chlorophyll relative content（SPAD） and net photosynthetic rate（Pn） enhanced photosynthetic rate and rate of photosynthetic product transferred to the grain,also increased the grain number per spike and 1000-grain weight.Strip deep tillage improved the yield performance of spring maize,thus leading to high yield.

关 键 词：早春玉米 耕作方式 光合性能 产量性能 

分 类 号：S513[农业科学—作物学]