《Table 3 Soil nutrients (after rotating and returning to field)》

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《Effects of Rotating Summer Green Manure Crops and Straw Returning in Paddy Field on Rice Quality and Yield》

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Treatment I，summer mung bean（chemical fertilizer+organic fertilizer）-early rice（chemical fertilizer）；Treatment II，summer lablab bean（chemical fertilizer+organic fertilizer）-early rice（chemical fertilizer）；Treatment III:early rice (chemical fertil

As shown in Table 3，fertilization increased soil nutrients and organic matter content，and reduced the soil bulk density.Treatment IV had the lowest contents of soil total N，total P，total K and organic matter among all the treatments，which were respectively 0.032，0.046，0.681，and 2.50%，significantly lower than those in treatments I，II and III，and higher than those of the basic soil，but the difference was not significant.