1HW Scherer,K Mengel. Importance of soil type on the release of nonexchangeable NH 4 + and availability of fertilizer NH 4 + and fertilizer NO 3 -[J] 1986,Fertilizer Research(3):249~258 被引量:1
2H. W. Scherer. Fixed NH4-N in relation to EUF-extractable K[J] 1982,Plant and Soil(1):67~71 被引量:1