Abstract
Effects of irrigation water regime, soil clay content and their combination on growth, yield, and water use efficiency of rice grown in South China
Highlights
Rice is cultivated in almost every region of China
Considering water consumption and grain yield, the following conclusion can be reached: (i) The reduction in water consumption was greater than the reduction in grain yield in the case of drying soil 10% below saturation before reflooding. (ii) The reduction in water consumption was less than the reduction in grain yield in the case of drying soil 30% below saturation before reflooding; (iii) The increase in water use was greater than the increase in grain yield in the case of maintaining soil moisture at 100% of saturation before reflooding
3.1 Soil water content, soil clay content and cracks volume The soil water content in each plot was successfully controlled according to the design of irrigation regime
Summary
Rice is cultivated in almost every region of China. It is the staple food for more than 65% of the Chinese people[1] and feeds three billion people in the world[2]. The planting area for rice occupies about 23% of all cultivated land in China[3]. It is a water-loving crop and requires a large amount of freshwater under the flood-irrigated conditions. China owns less than 25% of the world average water resources per capita[4], recognized for its shortage in water resources. Even facing the increasing competition for water from the agriculture and other sectors in Received date: 2017-10-06
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