1983年对水稻品种庚湘(地点,贵阳市花溪)川大粳(地点,贵阳市野鸭乡)在灌浆中期作田间光呼吸抑制剂喷洒;处理为两种:(1)喷洒两次NaHSO_3(200ppm,两次间隔为5天)以喷水为对照。(2) In 1983, rice varieties Gengxiang (location, Huaxi, Guiyang, Sichuan) Dajing (site, Yeya Township, Guiyang) were sprayed with field photoperiod inhibitor in the middle of filling period. The treatment was two kinds: (1) spraying NaHSO 3 , Two intervals of 5 days) with water as a control. (2)