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为发展低碳农业、探讨玉米低碳高产耕作栽培技术对保障粮食安全的影响,通过田间大区对比试验,对玉米平作与垄作耕层土壤温度、水分及产量进行了比较分析。结果表明:玉米生长前期,田间尚未封垄时如遇干旱,平作较垄作更有利于蓄水保墒,抵御干旱。中耕之后,平作与垄作土壤含水量没有显著差异;平作耕层土壤温度上升或下降幅度均小于垄作,平作较垄作能更好地抵御低温或高温危害;玉米平作与垄作产量上没有显著差异。调查数据表明,玉米平作比常规垄作节约柴油22.2 L.hm-2。推广应用平作技术是应对气候变化、发展低碳农业的一项有效技术措施。
In order to develop low-carbon agriculture, the effect of low-carbon and high-yielding maize cultivation techniques on food security was discussed. The comparative experiments on soil temperature, moisture and yield of topsoil and ridge furrow were conducted by field experiments. The results showed that in the early stage of maize growth, in case of drought, the field was more conducive to water storage and soil conservation and drought resistance than ridge-ridge cultivation in the field. After cultivating, there was no significant difference in soil water content between flat cropping and ridge cropping. Soil temperature in flattened cropping soil layer increased or decreased less than that in ridge cropping, and flattening cropping ridge was better able to resist low temperature or high temperature damage. There was no significant difference in crop yield between flat cropping and ridge cropping. Survey data show that corn flat compared to the conventional land-saving diesel 22.2 L.hm-2. Popularization and application of cropping technology is an effective technical measure to tackle climate change and develop low-carbon agriculture.