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我省丘陵地区中稻大多在8月10日前后收割。中稻收后到小春播种,一般将近三个月时间。原有以中稻为主的旧复种轮作制度是中稻收后,或蓄冬水,或空闲以待种小春,致使这段时间内丰富的光、热、水、肥等资源不能发挥应有作用。为了合理利用季节,改革耕作制度,扩大复种,增产增收。1976年我们开展了关于中稻收后蓄留一季再生稻的试验研究。再生稻是利用头季稻现有的根和芽,以及头季稻中现存的有机营养物质而成长为再生苗的。其特点是生长迅速,生育期短(如蜀
Most of the hilly areas in the province of rice in the August 10 harvest. After rice harvest to spring planting, usually nearly three months time. The old crop rotation system mainly based on medium rice is to harvest rice after harvest or to accumulate winter water or to be idle for a variety of spring so that abundant resources such as light, heat, water and fertilizer can not play their due role during this period. In order to make rational use of the seasons, we should reform the farming system, expand the multiple cropping and increase the output. In 1976, we conducted a pilot study on the recovery of mid-season rice after one-season ratooning rice. Ratooning rice is the use of the first season of existing roots and shoots of rice, as well as the first season of rice existing organic nutrients and grow into a regenerative seedlings. It is characterized by rapid growth, short growth period (such as Shu