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Sichuan Province is the most widely distributed province in the southwestern winter paddy fields. The existing winter paddy fields cover an area of ​​about 380,000 hectares, most of which are concentrated in the hilly areas of southeastern Sichuan. Cold mud-field is a type of low-yielding paddy field that is widely distributed in the western rice area, and is commonly known as the “winter paddy fieldâ€. For the farmland, the soil moisture logging instrument is generally used for measurement and analysis, which provides the conditions for the improvement of the land.
Due to long-term flooding, there are many soil barrier factors in this type of paddy fields, such as scattered soil structure, low soil and water temperature, soil acidification, low nutrient availability, and reduction of toxic and harmful substances, causing rice seedlings to turn green slowly, rice seedlings. Back to the late, little delivery, and even sit in the pocket, affecting the formation of effective delivery, has become the main reason for the low yield of cold mud. Therefore, soil moisture recorder research to explore the cold mud field improvement technology has important significance and practical value for improving rice yield. In response to these problems, the winter paddy fields have been transformed through technologies such as paddy-upland rotation in the areas where there is protection from irrigation sources, completely solving the problems existing in the original soil, and in areas where there is no irrigation water source protection, it is difficult to promote non-aerobic rotation techniques. And application, winter paddy fields are still in full-year flooding state, so the technology to eliminate obstacles has yet to be broken. Since the 1980s, it has been devoted to the research of improved utilization of winter paddy fields, adopting semi-drought or farming of wheat or oilseed with no-tillage and moisture as the core. This technology can not only change the winter paddy fields to two crops a year, but also can solve or Reducing soil physical and chemical barriers in paddy soils due to year-round flooding, increasing soil redox potential and improving soil nutrient supply are favorable to the growth of rice and thus increase yield.
Through the research of the soil moisture recorder, in order to find breakthroughs in other technologies, some scholars have studied the effects of soil amendments and fertilization techniques on cold mud/inundation field fertility and rice growth, and found that soil amendments can effectively improve soils. Physicochemical properties, reducing acidity in paddy fields in southern China, and effectively slowing down the decline of rice roots in cold paddy fields in Northeast China; in terms of nutrient management, P, K, Zn and balanced fertilization can also be used to grow cold paddy rice in paddy fields. To prevent from scratching and increase production.
Due to long-term flooding, there are many soil barrier factors in this type of paddy fields, such as scattered soil structure, low soil and water temperature, soil acidification, low nutrient availability, and reduction of toxic and harmful substances, causing rice seedlings to turn green slowly, rice seedlings. Back to the late, little delivery, and even sit in the pocket, affecting the formation of effective delivery, has become the main reason for the low yield of cold mud. Therefore, soil moisture recorder research to explore the cold mud field improvement technology has important significance and practical value for improving rice yield. In response to these problems, the winter paddy fields have been transformed through technologies such as paddy-upland rotation in the areas where there is protection from irrigation sources, completely solving the problems existing in the original soil, and in areas where there is no irrigation water source protection, it is difficult to promote non-aerobic rotation techniques. And application, winter paddy fields are still in full-year flooding state, so the technology to eliminate obstacles has yet to be broken. Since the 1980s, it has been devoted to the research of improved utilization of winter paddy fields, adopting semi-drought or farming of wheat or oilseed with no-tillage and moisture as the core. This technology can not only change the winter paddy fields to two crops a year, but also can solve or Reducing soil physical and chemical barriers in paddy soils due to year-round flooding, increasing soil redox potential and improving soil nutrient supply are favorable to the growth of rice and thus increase yield.
Through the research of the soil moisture recorder, in order to find breakthroughs in other technologies, some scholars have studied the effects of soil amendments and fertilization techniques on cold mud/inundation field fertility and rice growth, and found that soil amendments can effectively improve soils. Physicochemical properties, reducing acidity in paddy fields in southern China, and effectively slowing down the decline of rice roots in cold paddy fields in Northeast China; in terms of nutrient management, P, K, Zn and balanced fertilization can also be used to grow cold paddy rice in paddy fields. To prevent from scratching and increase production.
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