Resources Science ›› 2017, Vol. 39 ›› Issue (6): 1127-1136.doi: 10.18402/resci.2017.06.12

• Orginal Article • Previous Articles     Next Articles

The impact of FDD rotation mode and irrigation methods on rice irrigation water efficiency in Southwestern China

Weiyong YU1(), Yanbin QI1(), Feng WEI1, Xin DENG2   

  1. 1. College of Economics,Sichuan Agricultural University,Chengdu 611130,China
    2. College of Management,Sichuan Agricultural University,Chengdu 611130,China
  • Received:2016-10-18 Revised:2017-03-06 Online:2017-06-20 Published:2017-06-20

Abstract:

Water is the main bottleneck to agricultural production safety and stable income in China and improving irrigation efficiency is a fundamental requirement of water-saving society construction. Measuring the efficiency of the FDD rotation mode and irrigation informs the reasonable arrangement of planting structure,choice of water savings and improvements in irrigation policy. Here,based on survey data of rice planting in southwest China and employing a DEA-Tobit model we measured and analyzed farmers’ irrigation efficiency,explored the FDD rotation mode and irrigation method,and solved endogenous problems. The results show that the whole average irrigation efficiency of rice is 0.14,the average scale efficiency is 0.55,the average technical efficiency is 0.27,and the water resource utilization improvement space is larger. The rotation crop economic benefits pattern is negatively correlated with rice irrigation efficiency and the water-saving effect of crop rotation is positively related to these. The degree of water resource endowment can overvalue the influence coefficient of FDD rotation on rice irrigation efficiency by 0.10%,and undervalue the influence coefficient of irrigation method on rice irrigation efficiency by 2.04%. We put forward several suggestions for adjusting and arranging “FDD Rotation Mode and Irrigation Methods” according to local conditions,emphasize large-scale planting and regional irrigation of plains, intensive and fine irrigation of mountain,and arranging irrigation water according to crop growth cycles.

Key words: FDD rotation, irrigation methods, technical efficiency, endogenous problems, DEA-Tobit Model, Southwestern China