| Effects of mulching with different kinds of plastic film on growth and water use efficiency of winter wheat in Weibei Highland |
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| DOI：10.7606/j.issn.1000-7601.2010.04.25 |
| Key Words: winter wheat biodegradable film common plastic film liquid film WUE |
| Author Name | Affiliation | | BAI Liting | The Research Center for Agriculture in Arid and Semiarid Areas, Key Laboralory of Crop Production and Ecology,
Minister of Agriculture of PRC, Norhwest A & F University，Yangling, Shaanxi 712100, China | | HAI Jiangbo | The Research Center for Agriculture in Arid and Semiarid Areas, Key Laboralory of Crop Production and Ecology,
Minister of Agriculture of PRC, Norhwest A & F University，Yangling, Shaanxi 712100, China | | HAN Qingfang | The Research Center for Agriculture in Arid and Semiarid Areas, Key Laboralory of Crop Production and Ecology,
Minister of Agriculture of PRC, Norhwest A & F University，Yangling, Shaanxi 712100, China | | JIA Zhikuan | The Research Center for Agriculture in Arid and Semiarid Areas, Key Laboralory of Crop Production and Ecology,
Minister of Agriculture of PRC, Norhwest A & F University，Yangling, Shaanxi 712100, China |
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| Abstract: |
| A study was conducted on growth conditions, water use efficiency and yield-increasing effect of two kinds
of different degradable mulching films and common plastic film in Weibei Highland of Shaanxi . The results showed that
the plant height, dry matter accumulation, yield and water use efficiency of winter wheat treated with biodegradable film
and common plastic flm were significantly(P< 0.05) higher than that with conventional open field cultivation, and win-
ter wheat ears were remarkably increased, so as a modest increase in the number of grains per spike. The yield-increasing
extent was 6.45% and 28.95%，7.52% and 22.44% respectively without significant difference between these two
kinds of coverage in two consecutive years, and the water use efficiency increased by 11.39% and 35 .02%，14.40%
and 12 .96 % respectively. The soil water storage of 0 ~ 200 cm soil layer increased by 17 .9~ 64.2 mm compared with
the control. The common plastic film had a great role in promoting plant height and dry matter accumulation in winter
wheat, while the liquid film, because of its vulnerability to environmental impact, could not fully play its physiological
and ecological effects. Biodegradable film had good soil moisture conservation effect and increased water use efficiency to 17.73 kg/(mm·hm2), as well as showed good economic and ecological benefits due to effectively solving the“ white pol-lution”problem. |
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