TITLE:
Effects of Continuous Plastic Film Mulching on Soil Bacterial Diversity, Organic Matter and Rice Water Use Efficiency
AUTHORS:
Meiyan Wu, Ruochao Hao, Lianghuan Wu
KEYWORDS:
Rice (Oryza sativa L.), Water Use Efficiency, Water-Saving Agriculture, Bacterial Diversity
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.4 No.4,
April
11,
2016
ABSTRACT: Two field experiments were conducted to
study the effects of 6-year plastic film mulching on bacterial diversity, organic
matter of paddy soil and water use efficiency on different soils with great
environmental variabilities in Zhejiang Province, China, under non-flooding
condition. The experiment started in 2001 at two sites with one rice crop
annually. Three treatments included plastic film mulching with no flooding
(PM), no plastic film mulching and no flooding (UM), and traditional flooding
management (TF). Soil samples were collected and analyzed for bacterial
diversity by DGGE and organic matter content, and water use efficiency (WUE)
was calculated. The results showed that PM treatment favored the development of
a more total bacterial community compared with TF management, the total number
of bands was 33.3, 31.7 at tiller stage and heading stage (p 7924
kg?ha?1 and 7015 kg?ha?1 for PM and 8150 kg?ha?1 and 6990 kg?ha?1
for TF, respectively. Compared to TF, WUE and irrigation water use efficiency
were increased significantly by 70.2% - 80.4% and 273.7% - 1300.0% for PM. It
is essential to develop the water-saving agriculture.