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生态学杂志 ›› 1997, Vol. ›› Issue (3): 11-18.

• 研究报告 • 上一篇    下一篇

辽西半干旱地区主要作物耗水规律的初步研究

王仕新, 刘作新, 赵焕胤, 庄季屏   

  1. 中国科学院沈阳应用生态研究所, 110015
  • 收稿日期:1996-05-14 修回日期:1996-07-19 出版日期:1997-06-10

A Preliminary Study of Water Consumption of Main Crops in the Semiarid Area of West Liaoning

Wang Shixing, Liu Zuoxing, Zhao Huanyin, Zhuang Jiping   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1996-05-14 Revised:1996-07-19 Online:1997-06-10

关键词: 长期施肥, 红壤水稻土, 土壤有机碳, 颗粒有机碳, KMnO4 氧化C, 固碳量

Abstract: The study showed that rainfall within growing season was the base of water consumption of crops.The supply from the rainfall reached 76.9%of water consumption.The water consumption of maize,sorghum,millet and soybean was 455.5-541.7mm,445.5-495.0mm,410.8-486mm and 379.8-494.5mm respectively.The maximum water consumption was at the course of jointingheading and milking.The maximum intensity of water consumption was at the course of flowering,while that of soybean was at late flowering to early podding with 5.6-11.1mm穌-1.Water consumption mainly came from 0-100cm soil layer,which provided more than 90% of the water consumption.Water within 0-50cm soil layer was utilized strongly by crops.Water from 100-150 cmsoil layer was less used and with different extents by different crops.

Key words: long-term fertilization, reddish paddy soil, soil organic C, particulate organic C, KMnO4C, carbon sequestration rate.