|Table of Contents|

Effect of Water Treatments on Soil Water Dynamics in Soybean Field of Mollisols Area in Northeast China(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2014年01期
Page:
73-78
Research Field:
Publishing date:

Info

Title:
Effect of Water Treatments on Soil Water Dynamics in Soybean Field of Mollisols Area in Northeast China
Author(s):
YANG Chun-bao1; ZOU Wen-xiu2; JIANG Heng2; 3; HAN Xiao-zeng2; HAO Xiang-xiang2; LI Meng2
1.Collage of Resources and Environment,Northeast Agricultural University,Harbin 150030,China;2.Key Laboratory of Mollisols Agroecology,National Observation Station of Hailun Agroecology System,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081,China;3.Graduate School of the Chinese Academy of Sciences,Beijing 100049,China
Keywords:
Soil water entry; Variation coefficient; Soil water storage; Soil water regulation
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2014.01.0073
Abstract:
Black soil had strong water capacity.The impact of different water entry amount(precipitation+irrigation)including excessive water(I1),suitable water(I2),drought(I3)and rainfed(R)treatments on the migration of soil water in soil profile was conducted based on controlled water treatment located in Hailun Agricultural Ecology Station of Chinese Academy of Sciences.The soil profile impacted by different water entry amount was as deep as 130 cm.For I1 treatment,the water infiltrated depth was 110 cm and the accumulated water entry was as high as 514 mm during soybean growing season.Compared with other treatments,soil water storage in 0-90 cm soil layer reduced 38 mm in I3,suggesting soil water stored in 0-90 cm soil layer could be utilized by soybean under drought stress.The similar temporal variation of soil water storage in 0-150 cm soil layer was observed in R and I1,I2 and I3,respectively.Therefore,the variation of soil water in soil profile was affected by the frequency and amount of water entry,water cycle depth increased when soil was in drought status.It also suggested that black soil has strong soil water regulation capacity,which was very important for the occurrence of seasonal drought.

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Last Update: 2014-08-04