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- W2358507942 abstract "This paper summarized sulfur fertilizer experiments conducted in red soil region of Zhejiang Province in recent 20 years. The results of 53 field experiments showed the yield increases due to S fertilization application ranged from 0.5 %to 22.9% (av. 7.3%) and from 12 to 1 135 kg/hm 2 (av. 386 kg/hm 2 ). Application of sulfur fertilizer (SF) at 15-30 S kg /hm 2 was adequate for optimum grain yield of rice. The increased yield effect obtained from applying Tiger CR 90 and ammonium sulfate (AS) was grater than that from the other SF. Increased yield effect of application of N fertilizer was reduced by application of SF, whereas increased yield effect of application of SF decreased with increasing the rates of N fertilizer. Under the condition of wetting irrigation and the soils with lower fertility level, increased yield effect due to application of SF was greater. Value: cost ratio (VCR) of SF fertilization obtained from 53 rice field experiments was 7.72. The VCR from S fertilization decreased with increasing rates of N fertilizer. Moreover, VCR from S fertilization was greater than from N fertilization. Under the condition of different N levels, VCR from S fertilization was 4.1-13.7. Sulfur fertilizer is viewed as highly profitable in rice production." @default.
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- W2358507942 date "2002-01-01" @default.
- W2358507942 modified "2023-09-25" @default.
- W2358507942 title "Effect of applying sulfur fertilizers on rice yield on paddy soils in red soil regions" @default.
- W2358507942 hasPublicationYear "2002" @default.
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