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玉米—晚稻水旱轮作新复种制的研究与推广,近年在湖南省的耕作改制及粮食增产方面已收到良好的经济效益和社会效益。湖南省耕作制度研究协作组,于1984年曾就这种复种制在提高光能利用率、改善土壤结构、增加土壤肥力,以及提高粮食产量,增加经济效益等方面,进行了卓有成效的研究。为了进一步探讨旱作玉米在稻田生态环境条件下根系生长的特点及其规律,以便为稻田玉米高产栽培及水旱轮作新复种制的丰产配套技术提供依据,从1985年起开展了本项试验。现将研究的初步结果报道如下。
The research and popularization of corn-late rice rotation and rotation cropping system in recent years has received good economic and social benefits in terms of farming system and grain yield increase in Hunan Province. The cooperative farming system research group in Hunan Province conducted a fruitful study in 1984 on such multiple cropping system in terms of improving the utilization of light energy, improving soil structure, increasing soil fertility, increasing grain yield and increasing economic benefits. In order to further explore the characteristics and regularities of root growth of dryland maize under paddy field ecological environment conditions, in order to provide basis for high yielding cultivation of paddy field maize and high yield matching technology of rotation and watering new double cropping, this experiment was carried out from 1985. The preliminary results of the study are reported below.