不同类型地膜覆盖下沙棘扦插苗生长及除草效果的比较

Effect of Different Types of Mulching Film on Seabuckthorn Cuttings Growth and Herbicidal

以"向阳9"大果沙棘为试材,研究比较了白膜覆盖、黑膜覆盖、降解膜覆盖和露地平插对沙棘扦插苗生长及除草效果的影响。结果表明:不同地膜覆盖后增温效果表现为,白膜覆盖>降解膜覆盖>黑膜覆盖>处露地平插,5cm的土壤温度均高于10cm;除草效果表现为,黑膜覆盖>降解膜覆盖>白膜覆盖;白膜覆盖、黑膜覆盖和降解膜覆盖的沙棘插条成活率、新枝生长量、茎粗及根重均显著高于露地;普通白膜和黑膜的残留量大,而降解膜到收获时基本腐烂,不会造成残膜污染。在红山嘴苗圃的扦插育苗中采用黑膜覆盖或降解膜覆盖进行覆盖最好。

Taking ＇ Xiangyang 9 ＇ seabuckthorn as material, the effects of three different types of mulching film （white, black and biodegradable polyethylene） on seabuckthorn cuttings according to its weeding effect and growth were studied. The results showed that the heating effects of white mulching film was the best, biodegradable polyethylene was the second, black was the third and better than outdoor cutting, 5 cm soil temperature were higher than 10 cm. The herbicidal effects of black mulching film was the best,the white was poor. The survival rate,shoot growth,stem diameter and root weight of white, black and biodegradable polyethylene mulching films were significantly higher than outdoor. The biodegradable polyethylene mulching film would not cause film pollution because they basically decomposed at the harvests,while white and black mulching film had a lot of remains film in the soil. Therefore, the effect of black or biodegradable polyethylene mulching film was better in the cutting propagation test in our nursery.