JOURNAL OF NATURAL RESOURCES ›› 2014, Vol. 29 ›› Issue (9): 1508-1519.doi: 10.11849/zrzyxb.2014.09.006

• Resources Evaluation • Previous Articles     Next Articles

Variation Characteristics of Single Cropping Rice Water Surplus Deficit under the Background of Climate Change in Sichuan Province

CHEN Chao1,2, PANG Yan-mei1,3, PAN Xue-biao3   

  1. 1. Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610072, China;
    2. Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu 610225, China;
    3. College of Resources and Environment, China Agricultural University, Beijing 100193, China
  • Received:2013-06-20 Revised:2013-09-17 Online:2014-09-20 Published:2014-09-20

Abstract:

Based on the observation data from 109 meteorology stations during 1961-2010 andphenological data of single cropping rice from 16 agrometeorological stations during 1981-2010 well spread over the rice growing regions of Sichuan Province, the effective precipitationand water requirement of single cropping rice were calculated and water deficit and water deficientratio for the rice were analyzed in the study area. The results showed that the average waterdeficient ratio during 1961-2010 from booting to flowering was the highest, followed bythat from transplanting to booting, and that from flowering to maturity was the least. The effectiveprecipitation, water requirement and water deficit during the entire growth period of ricewere decreasing, but the water deficient ratio for the central and western rice-growing areasshowed an increasing trend. The effective precipitation decreased during the transplanting tobooting and flowering to maturity stages, but increased during the booting to flowering stage.The water requirement among the different growth stages showed a downward trend. The waterdeficit and water deficient ratio decreased during the booting to maturity stage, but increasedduring the transplanting to booting for the central and western rice-growing areas. The researchcan provide the basis for agricultural water use and reasonable irrigation in rice growing areasin Sichuan.

Key words: climate change, statistical analysis, water surplus deficit, single cropping rice of Sichuan

CLC Number: 

  • S162.3