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中文摘要：
基于大田试验，分析了不同地膜残留量下玉米出苗率、株高、叶面积、干物质积累量和产量的变化。结果表明，残膜量为180、360和720 kg／hm2时，出苗率较不覆膜分别低2．2％、4．8％和10．9％。玉米苗期和拔节期生长发育状况受残膜影响程度随残膜量增加而增加．后期生长发育阻碍作用减弱。与不覆膜相比，残膜量为360与720kg／hm2时，玉米分别减产12．4％与15．6％，减产幅度达到显著水平。
英文摘要：
Field experiments were conducted to analyze the changes of emergence rate oI seecnng.〉 , pheight, leaf area index, dry matter accumulation and yield of maize under different residues of plastic film.The result showed that the emergence rates of seedings under plastic film residues of 180 kg/hm2 , 360 kg/hm2 ,720 kg/hm2 , decreased by 2.2%, 4.8% and 10.9% compared to CK. The bigger residues of plastic film inseeding stage and elongation stage, the more significant effect on the growth and development, but effectof plastic film residues on the growth and development became weak in the later growing stage. Comparedto CK, corn yield under plastic film residues of 360 kg/hm2 and 720 kg/hm2 decreased significantly by 12.4% and 15.6% respectively.
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