有色地膜覆盖对生姜生长及产量的影响

有色地膜覆盖具有比地上遮荫更好的降温保湿效果，晴天中午黑色地膜覆盖的10cm地温与CK接近或降低1～2℃，土壤含水量比CK提高3.57%～5.02%；灰色地膜覆盖的10cm地温与CK无显著差异，但土壤含水量比CK提高3.28%～4.68%。从而可增强生姜植株长势，使其茎秆粗壮，叶面积大，分枝和姜球数多，增产效果明显。黑色地膜覆盖莱芜大姜比CK增产16.4%，莱芜片姜增产14.6%；灰色地膜覆盖莱芜大姜增产131%，莱芜片姜增产 10.6%。 与地上遮荫相比，有色地膜覆盖每667m2可节约成本108～158.7元，与增产部分合计(按2元·kg-1计)，莱芜市试验可提高经济效益1217.3～1486.5元(莱芜大姜)；腾州市试验可提高经济效益735～969元(莱芜片姜)。

Effect of Color Plastic Film Mulch on the Growth and Yield of Ginger

The effect of color plactic film mulch on the growth a nd yield of ginger was studied. The results indicated that the treatments of col or plactic film mulch had better effect on reducing soil temperature and preserv ing moisture. As compared with controls， the soil temperatures under black film mulch and grey film mulch were no remarkable difference，while the soil moi sture were enhanced 3.57%-5.02% and 3.28%-4.68% respectively；the ginger plant s had stronger shoots，larger leaf area，more branches and gin...