%0 Journal Article %A ZHANG Peng %A ZHOU Quan %A HUANG Guoqin %T Effects of Winter Different Planting Patterns on Soil Aggregates and Organic Carbon in Paddy Fields %D 2019 %R 10.11869/j.issn.100-8551.2019.12.2430 %J Journal of Nuclear Agricultural Sciences %P 2430-2438 %V 33 %N 12 %X In order to explore effect of different winter planting patterns on soil structure and quality of paddy fields, five winter planting modes were set in the experiment, including winter fallow, winter Chinese vetch, and winter rape, winter garlic and winter rotation (potato, Chinese vetch and rape). The water stability and distribution of aggregates in paddy fields were analyzed by measuring the composition of soil aggregates and the organic carbon content of aggregates in different layers of paddy fields. The results showed that the soil aggregate content(> 2mm) was dominant (the highest), followed by <0.053mm, while the soil aggregate content of 1~2mm, 0.5~1mm, 0.25~0.05mm, 0.053~0.25 mm was similar; the mean weight diameter (MWD) and geometric mean diameter (GMD) of water-stable aggregates in paddy fields were increased by all winter cultivation treatments. The MWD of winter rape treatment, winter potato, Chinese milk vetch and rape rotation treatment and winter Chinese milk vetch treatment were increased by 21.50%, 21.16% and 16.32% respectively (P<0.05). GMD of potato, Chinese milk vetch and rape in winter rotation treatment increased by 44.74% and 62.50%, respectively, compared with that in winter fallow treatment (P<0.05); in addition, the fractal dimension values of soil water-stable aggregates were significantly reduced by different winter planting patterns (P<0.05), which was beneficial to the stability of soil structure; the organic carbon content of soil aggregates increased with different winter planting patterns. Therefore, different winter planting patterns are beneficial to enhance the paddy soil aggregate stability and the accumulation of organic carbon with different particle fraction of soil water-stable aggregates. The winter crop rotation with potato milk vetch and rape showed the best result. The findings provide a theoretical basis for the selection of the optimal pattern of winter fallow fields in southern China. %U https://www.hnxb.org.cn/EN/10.11869/j.issn.100-8551.2019.12.2430