A Field Study on the Relationship of Soil Water Content and Water Uptake by Winter Wheat Root System

doi:10.3321/j.issn:1000-7091.1995.04.019

Abstract

Abstract: Results from field experiments showed that during the early growth period of winter wheat,root mainly extracted water from the top layer of soil,then along with the deepenning of root system,about half of the water was extracted from the soils under 80cm.The water uptake by root system from a layer of soil is affected by three main factors,which are the root quantity in that layer, root activity in uptaking water and soil water condition besides the potential transpiration rate.Based on the distribution of root in soil, the live root length and density and the relation of soil water content with.the root water extraction rate,a model was established to describe the distribution of root water uptake rate.

Key words: Root distribution, Root water uptake rate, Soil water content, Winter wheat

CLC Number:

S512.107

Zhang Xiying, Yuan Xiaoliang. A Field Study on the Relationship of Soil Water Content and Water Uptake by Winter Wheat Root System[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(4): 99-104. doi: 10.3321/j.issn:1000-7091.1995.04.019.

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