通过盆栽试验，研究了不同地膜残留量(0、180、360、540、720 kg/hm2)对玉米和胡麻生长的影响。结果表明，残膜对玉米和胡麻出苗有一定的抑制作用，残膜量为360 kg/hm2和540 kg/hm2时分别对玉米和胡麻出苗率影响最大，出苗率低，出苗缓慢，随着出苗时间的延长，抑制作用逐渐减弱。0～540 kg/hm2残膜量范围内，随着残膜量的增加，玉米的株高和叶面积逐渐升高，胡麻的株高先升后降、单株分枝数逐渐升高。残膜量为540 kg/hm2时玉米和胡麻干物质均达到最大，残膜量为720 kg/hm2时降低显著。与胡麻相比，玉米是须根系作物，在土壤中的伸展范围广，与残膜接触的程度大，受残膜影响大。

Pot experiments were conducted to study the effects of residual plastic films (0、 180、 360、 540、720 kg/hm2) on growth for corn and oil flax. The results showed that the residual film content of 360 kg/hm2 and 540 kg/hm2 had the greatest effect on the emergence rate of corn and flax. The emergence rate was low and the emergence rate was slow， with the extension of the emergence time， the inhibition effect gradually weakened.When residual film amount was 0～540 kg/hm2， with the increase of film residue， the plant height and leaf area of corn increased gradually， the plant height of flax increased first and then decreased， and the number of branches per plant increased gradually. When residual film amount was 540 kg/hm2， dry matter of corn and flax reached the maximum. When residual film amount was 720 kg/hm2， dry matter of corn and flax decreased significantly. Compared with flax， corn is a silk root crop， which extends widely in the soil， contacts with the residual film greatly， and is greatly affected by the residual film.

S512.1