不同保护性耕作方式对旱地玉米的增产效应  

Effect of Conservation Tillages on the Yield of Corn in Dry Land

作　　者：智建奇[1] 贾志森[1] 郑联寿[1] 武海丽[1] 张素珍[1] 

机构地区：[1]山西省农业科学院玉米研究所,山西忻州034000

出　　处：《玉米科学》2006年第2期112-114,共3页Journal of Maize Sciences

摘　　要：通过16种不同保护性耕作方式对旱地玉米产量影响的试验,结果表明:秋深耕+秋施肥+春免耕(A1)和秋浅耕+秋施肥+春免耕(A2)两种耕作方法,明显优于其他耕作方法,每公顷玉米增产为1009.5～1182kg;玉米整秆覆盖(B2)、玉米碎秆覆盖(B3)和地膜覆盖(B1)3种覆盖之间无显著差异,但都比不覆盖(B4)增产显著,每公顷玉米增产为1031.7～1281.7kg。16个处理中,A1B3(秋深耕+秋施肥+春免耕)+玉米碎秆覆盖处理的玉米产量最高达6508.5kg/hm2,是干旱地区可选择的保墒蓄水增产耕作栽培形式。The effect of 16 different conservation tillages of dry land on the corn yield was studied in this paper. The results showed that the two methods of Al（deep-plough to subsoil in autumn ＋ fertilize in autumn ＋ without-till in spring） and A2（shallow-plough to subsoil in autumn＋ fertilize in autumn ＋ without-till in spring） were better than others and increased corn yield with 1 009.5 kg to 1 182 kg per ha when compared with A4. There was no significant difference among the three mulching-modes to soil of stalk-cover（B2）, broken stalk-cover（B3） and plastic film-cover （B 1）, while the three methods of A1, A2 and A3 brought out higher corn yield than un-cover（B4）, with 1031.7 to 1 281.7 kg per ha. Among all 16 control of tillage management .and mulching-modes, the corn yield of A1B3 was the highest and as high as 6 508.5 kg per ha. The method of A1B3 was the effective cultivation method on water storage and high production in dry land.

关 键 词：旱地 保护性耕作 覆盖 玉米产量 

分 类 号：S513.048[农业科学—作物学]