Study of Water Demand and Consumption Rules in Summer Maize

doi:10.3321/j.issn:1000-7091.2003.02.013

Abstract

Abstract: In this study, rules of water demands and consumption by summer maize were analyzed.T here is a totaLwater demand of 359.8 mm during the whole growth stage of maize.Daily water demand in the whole growth period appeared to be a parabola:low in seedling stage, increased untiLreach its peak while from node elongation to tasseling and decreased gradually after tasseling and grain filling.RainfalLand irrigation provides most of water consumed by summer maize, while soiLwater supply con-tributes little, in some cases, there is even minus supply.But when some certain growth stage was in-spected, especially when there is a water stress, soiLwater supply may be the main source and contribut-ed much.

Key words: Summer maize, Water demand, Consumption, Rules

CLC Number:

S513.01

CAO Yun zhe, YU Zhen rong, ZHAO Tong ke. Study of Water Demand and Consumption Rules in Summer Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 47-50. doi: 10.3321/j.issn:1000-7091.2003.02.013.

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