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- W2355018393 abstract "Experiment of cotton furrow irrigation was conducted to investigate the effect of furrow irrigation technical factors on cotton water requirement,yield,and water and nitrogen use efficiency.The effect of irrigation amount and ditch depth on water deep percolation in cotton root zone,cotton actual water requirement,seed yield and water and nitrogen use efficiency were discussed.The results showed that:the average water deep percolation in the experimental year was 65.9 mm at the depth of 70 cm in cotton root zone,which was 13% of the irrigated amount and rainfall;water deep percolation in cotton root zone had a tendency to increase with the increase of irrigation amount,and the water deep percolation for the treatment of deep ditch depth was 5.7mm more than that for the treatment of shallow ditch depth;actual water requirement and crop coefficient of cotton was 435.3mm and 0.56,respectively;there was a significant effect of irrigation amount and ditch depth on cotton actual water requirement;cotton actual water requirement significantly increased with the increase of irrigation amount;the cotton actual water requirement under deep ditch depth was 15 mm lower than that under shallow ditch depth;the theory and actual yield of seed cotton was 3 416.6and 2 857.9kg/hm2,respectively;with the increase of irrigation amount,seed cotton yield and theory partial factor productivity from applied N(PFP)of cotton had an increasing trend,while cotton water use efficiency(WUE)showed a deceasing trend;the theoretic yield of seed cotton for the treatment of deep ditch depth was slightly higher than that for the treatment of shallow ditch depth,while the actual yield and water and nitrogen use efficiency of cotton was slightly lower.It was recommended that shallow ditch depth and limited irrigation amount for cotton furrow irrigation was adopted in dry years in the North China Plain to appropriately increase cotton yield and improve the utilization efficiency of water and nitrogen at the same time." @default.
- W2355018393 created "2016-06-24" @default.
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- W2355018393 date "2015-01-01" @default.
- W2355018393 modified "2023-10-02" @default.
- W2355018393 title "Influences of Irrigation Amount and Ditch Depth on Water Requirement,Water and Nitrogen use Efficiency of Cotton Under Furrow Irrigation" @default.
- W2355018393 hasPublicationYear "2015" @default.
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