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- W2370342213 abstract "In a calcareous soil with different rates of phosphate fertilizer adding, wheat, Vicia and pea were planted as first crops, and then maize and wheat were followed in succession in order to investigate the residual effect of phosphate fertilizer following different crops. The results show that the residual effects were very significant after all the 3 previous crops. The magnitude of the effects was not only related with the yield increase of the previous crops and P uptake by plants from fertilizer, but also with application rates. When the yield increase, P uptake, and the P recovery from fertilizer in the previous crops were high, the residual effect was definitely low. Otherwise, the residual effect would be high. Also, the fertilizer recovery was low when the application rates were low but the recovery was high for the first crops. However, the reverse was true for high application rates with low recovery in the previous crops. Despite the difference of the P uptake and fertilizer recovery existed in the first and second crops due to the different previous crops, the total recovery of each sequence of the 3 crops in rotation was almost approximate. The highst recovery of the total was found in the application of 4.5 kg P2O5 per mu. Through P uptake by 3 crops in succession, the residual effect was still significant in the yield increases, but the available P in soil determined by Olsen's method was no significant difference." @default.
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- W2370342213 date "1992-01-01" @default.
- W2370342213 modified "2023-09-24" @default.
- W2370342213 title "The Residual Effect of Phosphate Fertilizer of Different Crops in Calcareous Soil" @default.
- W2370342213 hasPublicationYear "1992" @default.
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