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- W2362212276 abstract "Based on the 4year filed experiment, the effects of different fertilizers on distribution and accumulation of NO3--N, and the yields of crops have been studied. The results showed that the longperiod nitrogen application with large amount caused NO3--N to accumulate in the soil profile, and the amount of NO3--N accumulated in the soil profile was increased with rate of N fertilizer application increased. There were 2 peaks of NO3--N accumulation in soil profile, one in 60~80 cm and another in 180~200 cm, but the position and value of accumulation peak changed with the soil texture in different layers. The combined application of P and K reduced the accumulation of NO3--N,especially the application of K reduced the accumulation in root zone, but the NO3--N left in the soil tended to move to the deeper profile. The amount of N, P and K application suitable to the plain areas nearing Taihang Mountain was advanced according to the test, i.e., N 200 kg/(hm+2·a), P 32.5 kg/(hm+2·a) and K 150 kg/(hm+2·a).;" @default.
- W2362212276 created "2016-06-24" @default.
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- W2362212276 date "2003-01-01" @default.
- W2362212276 modified "2023-09-25" @default.
- W2362212276 title "Effects of different fertilizers on crop yields and nitrate accumulation" @default.
- W2362212276 hasPublicationYear "2003" @default.
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