不同覆盖措施无公害清除五味子园杂草的试验

通过对凤城市郊区北五味子园杂草种群分布情况的调查和实施不同覆盖措施清除杂草试验，结果表明：凤城市郊区五味子园杂草具有鲜明的季节特性和杂草分布不均匀特性，杂草滋生数量较大，对五味子植株生产影响较大；杂草主要通过草籽和串根繁殖；不同覆盖措施间控制杂草的效果差异极显著，以覆双层黑地膜取得的效果最好，杂草比对照减少99．80％。采取双层黑地膜覆盖技术是有效控制五味子园杂草滋生蔓延的最佳措施，能够达到彻底控制杂草的目的。

Experiments of Weed Removal in Schisandra chinensis Garden Without Pollution by Using Different Mulching Measures

Population distribution of weeds in Schisandra chinensis Garden in suburbs of Fengcheng City was investi-gated ;the experiments of removing weeds by using different mulching measures were conducted .Result shows that ：Schisandra chinensis Garden in Fengcheng City have the characteristics of distinct seasonal characteristics ＆ uneven distribution characteristics of weeds ;the growth of Schisandra chinensis were greatly influenced by large number of weeds ;weeds propagate by seed and root-aggulmation ;the effects of controlling weeds among different mulching measures are significant ;mulching double-layer black film can obtain the optimal effect ;the weeds reduce by 99 .80%than that of the CK ;taking mulching technique with double-layer black film can effectively control the growth and spread of weeds in Schisandra chinensis Garden ,and can completely control the weed .