|Table of Contents|

Research on Soybean Production Water Footprint Based on CROPWAT Model During Past 26 Years in Harbin(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2019年02期
Page:
251-257
Research Field:
Publishing date:

Info

Title:
Research on Soybean Production Water Footprint Based on CROPWAT Model During Past 26 Years in Harbin
Author(s):
XU Meng1;  JIN Liang2;  WEI Dan3;  YIN Da-wei4;  LI Yu-mei2;  WANG Wei2;  ZHANG Jiu- ming2;  HU Jun-xiang5
（1.Kedong Base of the Logistics Department of Shenyang Air Force，Keshan 161600, China；2.Soil Fertilizer and Environment Resource, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China; 3.Plant Nutriention and Resources Institute, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China; 4.College of Agricultural Science and Technology, Heilongjiang Bayij Agricultural University, Daqing 163319, China)
Keywords:
Soybean;  Water footprint;  CROPWAT model;  Rainfall type
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2019.02.0251
Abstract:
Water footprint provides a new index system for evaluating agricultural water use during crop growth period in major soybean producing areas. In order to quantitatively evaluate the impact of water footprint composition and rainfall year types on soybean production, water footprint of soybeans in Harbin city(1986-2011) has been calculated using the CROPWAT model provided by FAO，through which the regulations changes of its composition distributed in different rainfall year type and the relationship between the footprint with soybean planting area/yields were investigated. The results showed that the components of soybean water footprint varied from 1986 to 2011. From the whole view, green water footprint took a large proportion in the total water footprint content, which ranged from 0.12 to 0.29 m3?kg-1; the agglomeration effect was found in water-deficient year type for blue water: The five years for containing the blue water were all belonging to the water-deficient year, and normal and rich years basically need no irrigation. The changes of water footprint from 1986 to 2011 showed the decreasing trend, the blue water ranged from 0.017 4 to 0.048 2 m3?kg-1, which accounted for 9.52% to 28.73% of water footprint. The index R2 of quadratic equations showed that the relationship between effective rainfall and soybean yield per unit in wet- and dry-year could be described with quadratic function. The results of this study can provide a basis for the overall management of water and fertilizer in the major soybean producing areas of Heilongjiang province.

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Last Update: 2019-04-01