| Effects of biodegradable film mulch on water content of sandy soil and growth of grape seedlings |
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| DOI：10.7606/j.issn.1000-7601.2014.04.018 |
| Key Words: biodegradable film water-saving grape soil water content growth indicator |
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| Abstract: |
| Aimed at increasing the use efficiency of water resources in arid and semiarid areas, the effects of biodegradable film mulch on water content of sandy soil and growth of grape (Vitis vinifera L.) seedlings was investigated in Turpan, Xinjiang, China. There were 4 treatments in the experiment, namely completely biodegradable film mulch, partly biodegradable film mulch, ordinary film mulch and no mulch. The measurement was lasted for 90 days to compare soil water content and growth of grape seedlings among different treatments. The results showed that water could be saved by 60% in film mulch zone compared with no mulch zone. Film mulch could increase the water content of sandy soil in 10～40 cm depth remarkably, thus presenting a water retention effect. Compared with no mulch, the number of sprouts and leaves, the leaf area, and the diameter growth rate and node number of new shoots were increased under completely biodegradable film mulch; the number of sprouts and leaves, the leaf area and the growth rate of leaves on new shoots were increased under partly biodegra
dable film mulch; and the number of sprouts and the growth rate of nodes on new shoots were increased under ordinary film mulch. The effect of all mulch treatments on the basal diameter of seedlings and the diameter, length, node number, leaf number and length growth rate of new shoots were insignificant. It was concluded that completely biodegradable film could not only bring about an obvious effect on soil water conservation, but also increase most of the growth indicators, so its comprehensive effect was the best. |
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