不同种植方式下玉米田杂草对春玉米生理及养分的影响  

Effect of Weed on Physiology and Nutrient of Corn under Different Planting Patterns

作　　者：殷红[1] 刘芳[1] 李建东[1] 殷萍萍[1] 王国骄[1] 燕雪飞[1] 

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110161

出　　处：《西南农业学报》2009年第6期1536-1541,共6页Southwest China Journal of Agricultural Sciences

基　　金：辽宁省教育厅高等学校创新团队科研项目(2009T088)

摘　　要：采取二因素随机区组试验。A因素为种植模式,内设玉米清种和玉米与苜蓿间种,B因素为混群杂草密度。根据上一年的玉米田杂草群落组成,按杂草混合种群比例,内设6个不同杂草密度处理,即每平方米有杂草0、25、50、100、200、400株。结果表明:玉米叶绿素a和叶绿素总含量在杂草密度为25株/m2时两种种植方式间有显著性差异,叶绿素b含量在杂草密度为100株/m2时两种种植方式间差异性显著,并且均是清种玉米处理比间种苜蓿处理要高;清种玉米处理的MDA含量要高于间种苜蓿的MDA含量;在可溶性蛋白含量最高的灌浆期,当杂草密度为100和200株/m2时,两种种植方式间存在着显著性差异,间种苜蓿比清种玉米含量高;玉米可溶性糖含量在间种苜蓿田中,前期高密度杂草的较大,而在生育后期则为低密度杂草的较大,土壤速效氮含量的变化与之相反;植物全氮含量的在清种玉米田的生育前期杂草密度为25和100株/m2时值较高,间种苜蓿处理下杂草密度为50株/m2的含量在玉米生育前期一直居于领先地位。The effects of weed community and alfalfa on crops in cropping patterns and density were studied . A factor was the cropping pattern, including planting only corns and interplanting of corn and alfalfa. B factor was the weed density of mixed group. On the basis of the weed community composition in past year and according to the proportion of mixed population of weeds, six different weed density treatments ,including 0, 25, 50, 100,200,400 weeds per square meters were established. The conclusion was drawn that： chlorophyll a and total chlorophyll content of maize under two cropping patterns were significantly different when the weed density was 25 plant/m2 , chlorophyll b of maize under two cropping patterns were significantly different when the weed density was 100 plant/m2. The MDA content in corns by single planting was higher than that by inteplanting of corn and alfalfa. In the grain-filling stage ,the soluble protein in corns was the highest, there was a significant difference in the two planting ways when the weed density were 100 and 200 plants/m2.

关 键 词：种植方式 春玉米 杂草密度 生理 

分 类 号：S513[农业科学—作物学]