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我省稻田双季稻绿肥长期连作,致使土壤板结,理化性状变坏。改革耕作制度,提高其经济效益是当前一个重要问题。近几年来,豆(玉米)稻复种制对士壤结构和理化性状的影响,国内外作了很多研究,但对土壤微生物的影响,目前国内还报道得很少。本试验研究了豆(玉米)稻复种制与双季稻绿肥田土壤和晚稻根表微生物的数量,土壤酶活性及呼吸强度,试图为调整和改革稻田耕作制度提供依据。
Long-term continuous cropping of paddy rice with double cropping rice in the province led to soil compaction and physical and chemical properties deteriorating. Reforming the system of farming and raising its economic efficiency is now an important issue. In recent years, the effects of soybean (maize) rice multiple-cropping on the structure and physical and chemical properties of lean soil have been studied at home and abroad, but the impact on soil microorganisms is still rarely reported in China at present. This experiment studied the soybean (corn) rice double-cropping and double-cropping paddy soil and late rice rhizosphere microbes, soil enzyme activity and respiration intensity, trying to provide the basis for adjusting and reforming paddy farming system.