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- W2394149596 abstract "The application of fertilizers along with straw incorporation was a common practice in sustainable crop production.A field experiment under different N-fertilizer application rates with full straw incorporation was conducted to explore N application rate for optimal crop yield and economic benefit in Taihu Lake region.Five treatments were designed with 0(N0),120 kg(N)·hm-2(N1),180 kg(N)·hm-2(N2),240 kg(N)·hm-2(N3) and 300 kg(N)·hm-2(N4) N-fertilizer application rates each with 6 t·hm-2 incorporated straw.Results showed that rice yield initially increased with increasing N-fertilizer rates and then decreased.The maxi-mum rice yield in 2007 and 2008 was 8 543 kg·hm-2 and 7 772 kg·hm-2,respectively.Compared with N0 treatment,rice yield for the two years of N-fertilizer application(treatment N1～N4) increased by 9.6%～19.4% and 13.0%～17.8%,respectively.Compared with N0～N3 treatments in 2008,N4 treatment presented obviously lower marginal yield(4.5 kg·kg-1),agronomic use efficiency of N-fertilizer [3.0 kg·kg-1(N)],seed setting rate(69.9%),1000-grain weight(25.1 g),additional net-income rate(0.91%),and mar-ginal cost return rate(1.03 Yuan·Yuan-1).A fitted rice yield,economic benefit and N-fertilizer application rate equation showed an optimal N-fertilizer rate of 218～223 kg·hm-2,under which the optimum rice yield and maximum economic benefits were 7 686～ 8 295 kg·hm-2 and 7 413～8 607 Yuan-hm-2,respectively.Optimum N-fertilizer application with full straw incorporation not only achieved the best economic benefits,but also the highest rice yield and nitrogen utilization efficiency." @default.
- W2394149596 created "2016-06-24" @default.
- W2394149596 creator A5066258582 @default.
- W2394149596 date "2011-01-01" @default.
- W2394149596 modified "2023-09-25" @default.
- W2394149596 title "Effects of different N-fertilizer rates with straw incorporation on rice yield and economic benefit of rice-wheat rotation system in Taihu Lake region" @default.
- W2394149596 hasPublicationYear "2011" @default.
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