“激光早”系嘉定县华亭良种繁育场和中国科学院上海光机所,用N_2激光辐照广陆矮4号干种培育的中熟早籼,现简介如下: 一、品种特性:激光早株型同广陆矮四号没有明显区别。茎秆粗壮,叶面稍宽,叶片短厚而直,叶色浓绿,叶梢青色,株型紧凑,分蘗力中等。株高比广陆矮四号增加3厘米左右,主要是穗颈伸长。据上海植生所光合室初步测定,激光早的光合强度比广陆矮 “Laser early” Department of Jiading County Huating breeding ground and the Chinese Academy of Sciences Shanghai Institute of Optics, N 2 laser irradiation Guangluan 4 dry varieties of early maturing medium-maturing, are as follows: First, the characteristics of varieties: early laser strains Type with Guangya dwarf No. 4 no significant difference. Stalks stout, slightly wider foliage, thick and straight leaves, dark green leaf color, leaf tip cyan, plant compact, medium tillering ability. The plant height is about 3 centimeters higher than that of Guanglu Dwarf, which is mainly the elongation of panicle neck. According to the preliminary determination of the photosynthesis chamber of the Shanghai Institute of Plant Biology, the early photosynthesis intensity of laser is shorter than that of Guanglu