Dissertation
Dissertation > Agricultural Sciences > Agriculture ( agronomy ) > Farming and Organic Agriculture > Organic agriculture

Conservation Tillage Effects on Water Use of 2 Phases Rotation Systems with Spring Wheat and Field Pea in Dryland

Author GuoQingYi
Tutor HuangGaoBao
School Gansu Agricultural University
Course Crop Cultivation and Farming System
Keywords Conservation tillage Dry Spring wheat Peas Rotation system Moisture Dynamic Variation Water use efficiency
CLC S345
Type Master's thesis
Year 2004
Downloads 150
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This article is semi-arid Loess Plateau Gansu hills typical areas - Dingxi Prefecture , on the basis of pre- trial research , 2002-2004 by conservation tillage conditions as early as spring wheat - peas sequence rotation test farmland soil moisture dynamics , Experimental study on yield and water use efficiency , the results show : 1, protection f Health , farming and traditional farming 0 - 2m soil water storage consistent seasonal variation and vertical trends . Conservation tillage tilling the soil , to use the NTS increase soil Xushuibaoshang ability to improve the 0 - 30cm soil layer storage capacity of 7.02 % to 24.29% . 3, NTS can increase soil water content of 0.53% -11.26 % . 4 different rotation order of soil water storage and water content . Two rotations , soil water storage volume increased 21.72% -30.36% 20.13% -30.92 % , respectively . The water content of the peas Qiancha rotation sequence were higher than CLL. 5 , conservation tillage combined with different rotation order to enhance the permeability of the soil and water seepage . Conservation tillage in the late growth stage can increase crop dry matter accumulation . The order of the rotation with peas Qiancha than the wheat Qiancha rotation sequence dry matter accumulation increased by 7.16% -54.05 % . 7, NTS can increase crop yield and water use efficiency . Increased by 30.28% and 40.08% , respectively, compared with conventional tillage .

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