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- W2375089025 abstract "The random field tests from 2000 to 2004 in Xinhe county and Yuli county in Xinjiang were carried out to evaluate the effects of different amounts of nitrogen fertilizers on cotton yield of different varieties,nitrate-N concentration in plant tissue and soil under different types of soil,different patterns of cultivation or irrigation.The results were as follows:applying nitrogen fertilizer increased cotton yield by(2%-)73.8%.Effects of nitrogen fertilizer on cotton were unsignificant at Xinhe county(F_(2000)=0.72) with local cultivation mode and soil condition,but were significant at Yuli in spite of tradition or drip irrigation system(F_(2001)=8.20~(**),F_(2002)=2.91~*,F_(2003)=10.75~(**),F_(2004)=17.97~(**)).The optimum N rates of different varieties were not equal under different soil conditions,different cultivation patterns and different irrigation modes,but the trends of degression of payment were consistent.Cotton yields were quadratic correlated with N rate,and Cotton yields declined with excessive N rates.The nitrate-N concentration in plant tissue during budding period or flowering period was prominently correlated to nitrogen fertilizer amount and cotton yield,it showed that nitrate-N concentration in plant tissue should be an referrence index for the quick diagnose of cotton nutrition.Furthermore,accumulation of nitrate in soil was affected by irrigation mode,and a great deal of nitrate remained in cotton field with excessive N rate which enhanced the risk of nitrate leaching,and became a potential source of environment pollution." @default.
- W2375089025 created "2016-06-24" @default.
- W2375089025 creator A5087413036 @default.
- W2375089025 date "2006-01-01" @default.
- W2375089025 modified "2023-09-26" @default.
- W2375089025 title "Effects of N rate on cotton yield and nitrate-N concentration in plant tissue and soil" @default.
- W2375089025 hasPublicationYear "2006" @default.
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