Abstract: Taking the cold waterlogged field in Xianning city of Hubei province as the test object,the different improvement measures were integrated to form a complete set of technical models,and the best choice of the cold waterlogged field improvement model was studied through field experiments.The conventional technology model (CK) was used as a control to study the effects of micro-fertilizer technology models (T1) and warm field technology models (T2) on the root development,dry matter content and yield of rice (Oryza sativa L.) in cold-soaked fields.The results showed that T1 and T2 could promote root growth and development,increase dry matter content,the ratio of roots and shoots,and the yield of rice.Compared with CK,T1 increased yeild by 12.98% and T2 increased yeild by 21.41%.In summary,the integration of different cold waterlogged field improvement measures can enhance the root morphology development,increase the dry matter content of rice,and achieve a significant increase in yield.Among them,T2 reduces the impact of cold water stagnation through integrated trenching and drainage measures,and the yield increase effect is better than T1.

Key words: cold waterlogged, warm field technology, rice (Oryza sativa L.), root system, yield, improvement measures