笔者于今年3月下旬末,在海南崖县保港公社汕优2号的制种田中,喷施维生素 C,获得了显著增产效果。我县去冬今春在崖县制种汕优2号1,040亩,其中三分之一的田块喷施了维生素C,平均亩产225.3斤。临江公社喷维生素 C后进行考种的结果,平均每穗增加实粒数1.5粒,平均亩产292.5 At the end of March of this year, the author sprayed vitamin C in the system of farming system Shanyou No.2 of Baogong commune of Yaxian County, Hainan Province, and obtained remarkable yield increase effect. My county winter to spring this year in the county of Shanyou No. 2 1,040 acres, of which one-third of the plots sprayed vitamin C, the average yield of 225.3 pounds. Linjiang commune after spraying vitamin C test results, the average increase in the number of real grains per spike 1.5, the average yield 292.5