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• W2349976841 abstract "【Objective】On the issues of drip irrigation water consumption and rational application of water and fertilization in the winter wheat belt region of Huang-Huai-Hai Plain,no-tillage fields were chosen as experimental sites located in Huantai,Shandong Province to carry out a systematic study on the effects of drip fertigation on soil moisture vertical migration,winter wheat grain yield and its components and water use efficiency(WUE).【Method】The study adopted the methods of irrigation recharge by measuring soil moisture and drip fertigation in the main growth period compared with conventional flood irrigation and fertilization treatment.Five drip irrigation treatments including 65 mm(W1),98mm(W2),130 mm(W3),195 mm(W4) and 260 mm(W5) were designed.The corresponding NPK ratio was set up at tillering stage,joining stage,booting stage,young flowering and filling stages of winter wheat under the 130mm of irrigation treatment and 3 factors of NPK and 4 levels quadratic saturation D-optimization design were adopted for field experiment.The 4 levels of N,P,K were that 0 level with 0,0,0,1 level with 94.5,42.4 and 59.2 kg·hm-2,2 level with 189,84.7 and 118.3 kg·hm-2,3 level with 270,121 and 169 kg·hm-2.【Result】The results of experiment showed that the more drip irrigation amount is,the deeper soil moisture vertical migration will be,the soil moisture vertical migration of W1,W3 and W5 treatments moved to 60,80 and 100 cm,and could get risk of water percolation while drip irrigation achieved 260 mm.Soil moisture content of W1 treatment was obviously lower than others,130 mm and above drip irrigation treatment made soil moisture content at 0-80 cm soil layers over 75%-80% of the field moisture capacity during the growth period.Compared with conventional flood irrigation and fertilization treatment,the drip fertigation significantly increased the effective panicles of winter wheat.The drip irrigation amount had a positive correlation with grain number per spike and a negative correlation with 1000-grain weight in different drip irrigation treatments.The grain yield was the highest when irrigation amount was 130 mm.Drip irrigation apparently increased water use efficiency(WUE) and with the highest of W3 treatment that was 2.28 kg·m-3.Experimental fitting results indicated that the optimal fertilizer amount of N,P2O5 and K2O in pilot area was 206.63,86.72 and 88.07 kg·hm-2.【Conclusion】It was concluded that the winter wheat in no-tillage fields by irrigation recharge by measuring soil moisture and drip fertigation significantly increased,WUE and yield by 57.46% and 21.13% in Huang-Huai-Hai Plain,respectively,compared with conventional treatment.The main reason was that the water moved to crop roots area after drip irrigation that could reduce the risk of water percolation and promote fertilizer-absorbing with water.The rational ratio of drip fertigation could totally make water saving by 51.85%,N,P,K fertilizer saving,respectively,by 23.47%,28.33% and 47.89%." @default.
• W2349976841 created "2016-06-24" @default.
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• W2349976841 date "2014-01-01" @default.
• W2349976841 modified "2023-09-22" @default.
• W2349976841 title "Effects of Drip Fertigation with No-Tillage on Water Use Efficiency and Yield of Winter Wheat" @default.
• W2349976841 hasPublicationYear "2014" @default.
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