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1 January 2018 Effect of Non-Flooded Plastic Film Mulching Cultivation for Rice in Southeast China
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Abstract

The effects of non-flooded plastic film mulching cultivation (PM) and polymer-coated urea (PCU) on rice yield, soil properties, and weed diversity were investigated in experimental plots of rice monoculture in Lanxi, China. The combination of PM and PCU increased rice yield. Compared with traditional flooded cultivation, under PM, soil pH remained higher, but decreased soil organic matter, total nitrogen, available phosphorus, and exchangeable potassium in the 0- to 10-cm soil layer. Soil fertility influenced winter weed communities, with hairy bittercress, Asian mazus, and shortawn foxtail being the most abundant species. Multivariate analysis indicated that changes in the winter weed species diversity were primarily due to exchangeable potassium. PCU had no significant influence on weed diversity, while plots without nitrogen fertilizer had higher springgerminating weed density.

Nomenclature: Shortawn foxtail, Alopecurus aequalis Sobol.; hairy bittercress, Cardamine hirsuta L.; Asian mazus, Mazus pumilus (Burm. f.) Steenis; rice, Oryza sativa L.

© Weed Science Society of America, 2017
Xin Yang, Wenhai Mi, Xiaoli Tan, Lianghuan Wu, and Vladimir G. Onipchenko "Effect of Non-Flooded Plastic Film Mulching Cultivation for Rice in Southeast China," Weed Science 66(1), 134-141, (1 January 2018). https://doi.org/10.1017/wsc.2017.37
Received: 26 October 2016; Accepted: 1 May 2017; Published: 1 January 2018
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