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用激光照射选育的早籼水稻新品种光大白,经两年来大面积多点示范推广,一九七九年的种植面积由一九七八年800多亩发展到20多万亩,普遍获得增产,表现出抗稻瘟病,千粒重较大,晚季成熟期短的突出优点。江西、湖南、湖北、安徽等地都来我省大批调种。一、主要生育特性:(一)生育期短,早季110～118天,晚季105～110天。作晚季种植,熟期比红410早5～7天,其产量潜力、后期转色、结实率、谷粒饱满度均比早季好。(二)分蘖力强,成穗率高,穗数、粒数、粒重比较协调。一般单株有效穗13～14穗,每穗粒数70～80粒,结实率85％左右,千粒重29～32克。(三)根系较发达,耐寒性也较强,早春苗期生长比红410快。叶片短而直立,光合效率较高。
The new indica rice variety Guangdaibai, bred by laser irradiation, has been extensively demonstrated and popularized in large areas over the past two years. The area under cultivation in 1979 has grown from 800 mu in 1978 to more than 200,000 mu and it has been widely proclaimed Yield, showing resistance to rice blast, a thousand grain weight, late maturity short prominent advantages. Jiangxi, Hunan, Hubei, Anhui and other places have come to our province a large number of species. First, the main characteristics of reproductive: (a) short growth period, early morning 110 to 118 days, late 105 to 110 days. For late-season planting, maturity is 5 to 7 days earlier than that of red 410, and its yield potential, late color change, seed setting rate and grain fullness are better than those in the early season. (B) strong tillering ability, high ear rate, spike number, grain number, grain weight more coordinated. The average effective panicles per plant 13 ~ 14 spikelets, grain number per spike 70 ~ 80, seed setting rate of about 85%, 1000 grain weight 29 ~ 32 grams. (C) more developed roots, cold resistance is also strong, early spring seedling growth faster than the red 410. Short and erect leaves, photosynthetic efficiency is higher.