a nice review, especially of the problems with triple cropping
CITATION STYLE
Qi, X. (1981). Cropping System in Relation to Fertility of Paddy Soils in China. In Proceedings of Symposium on Paddy Soils (pp. 220–230). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-68141-7_15
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