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- W2392901760 abstract "The spring wheat-Chinese cabbage and celery-Chinese cabbage are two types rotate system in irrigation areas by diverting from yellow river in Ningxia.The paper aimed to determine and compared the effect on N utilization and balance of different rotate systems,based on nitrogen and water for optimum management.Compared with CK and organic fertilizer,the effects of different application nitrogen treatment were studied on the nitrogen balance,nitrate accumulation with different rotate system in Ningxia yellow river irrigated area.The data show that saving recommend nitrogen fertilization(W2N3) and convention irrigation fertilization(W1N3) treatment were little different in crop yield and uptake N.The yield of W2N3 were increased 6.7%(spring wheat),12.2%(celery) and 5.9%(wheat after planting Chinese cabbage),22.4%(vegetable after planting Chinese cabbage).The application nitrogen and nitrogen net mineralization were main place in nitrogen input,crop uptake and the nitrogen apparent loss were main place input of nitrogen balance principle.The result show in apparent nitrogen loss of recommend nitrogen fertilization(W2N3) were 53 kg/hm2(W1),47 kg/hm2(W2),residual Nmin of W2N3 decreased by 13 kg/hm2 of W1N3 in spring wheat-Chinese cabbage rotate.In celery-Chinese cabbage rotate,nitrogen loss of recommend nitrogen fertilization decreased 77 kg/hm2(W1),30 kg/hm2(W2) respective,residual Nmin of W2N3 decreased by 3 kg/hm2 of W1N3. At the layer of 0~180 cm depth after different crop harvest,the characteristic soil NO3—N in different layer were different significantly.The soil NO3—N content of W2N3 in different rotate were lower than W1N2 and W1N3 treatment.There were mainly in 0~60 cm surface layer.The decrease of residual NO3—N of W2N3 in 0~60 cm surface layer was 0.21 times as much as with W1N3 in spring wheat-Chinese cabbage rotate.The decrease of residual NO3—N of W2N3 in 0~60 cm layer was 0.15 times as much as with W1N3 in cerely-Chinese cabbage rotate.The characteristic soil NO3—N of different layer were different significantly between spring wheat-Chinese cabbage rotate and celery-Chinese cabbage rotate." @default.
- W2392901760 created "2016-06-24" @default.
- W2392901760 creator A5020504306 @default.
- W2392901760 date "2007-01-01" @default.
- W2392901760 modified "2023-09-25" @default.
- W2392901760 title "Effect of Different Water and Nitrogen Measure on N Utilization and Balance of Different Rotate System" @default.
- W2392901760 hasPublicationYear "2007" @default.
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