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北京郊区大兴县的芦城生产大队、鵝房生产小队、团和农場等地的水稻田,年年有发生水稻縮苗的現象,尤其是新垦的稻田区,如孙村、西芦垡、后苑等地,1960年水稻田发生縮苗的面积約占总稻田面积15—20%。水稻縮苗主要发生在砂碱地或沙性土及土壤板結、土壤肥力低的瘠薄土壤上,在水稻插秧后20—30天內发生?⑸s苗現象后,秧苗生长迟緩,发育不良,严重者甚至萎縮
Daping County, Beijing suburbs of Lucheng production brigade, goose house production team, group and farms and other paddy fields, there is a phenomenon of shrinking rice every year, especially in the newly reclaimed rice fields such as Suncun, Xilu , Houyuan and other places. In 1960, the area of reduced seedlings in paddy fields accounted for 15-20% of the total paddy fields. Rice shrubs occur mainly in sandy soil or sandy soil and soil compaction, low soil fertility of barren soil, 20-30 days after rice transplanting occurs? ⑸ s seedling phenomenon, the seedling growth retardation, development Bad, severe or even shrink