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1987年庐江县皖粳1号种植面积由1986年的1.5万亩扩大到17.5万亩,其中双晚17.0万亩。据田间测产,双晚平均亩产322.065公斤,高产田块达到472.4公公。两年来,我们从583.2亩示范田中,随机抽样考察了不同类型田块31块,对产量构成因素亩有效穗数、穗总粒数、结实率、千粒重和株高进行了分析研究,力求探讨其合理的高产穗粒结构和增产途径。一、结果与分析 (一) 变异系数分析。据两年考察,皖粳1号作双晚单产变幅在270.0—472.4公斤之间,标准差(S)41.265公斤。在(?)(平均产量)±S、(?)±2S、(?)±3S的范围内的田块数依次为21、30、30,分别占
In 1987, the planting area of Anhui-1 in Lujiang County was expanded from 15,000 mu in 1986 to 175,000 mu, including 170,000 mu in double-night. According to the field test, the average output of double-night 322.065 kilograms, high-yield field reached 472.4 public. In the past two years, from 583.2 mu demonstration plots, we randomly selected 31 plots of different types of plots to analyze and analyze the yield earns per acre panicle, panicle number, seed setting rate, 1000-grain weight and plant height, Reasonable high yield ear grain structure and yield increasing approach. First, the results and analysis (A) coefficient of variation analysis. According to two years of inspection, Anhui-1 for double-night yield amplitude 270.0-472.4 kg, standard deviation (S) 41.265 kg. The field plots in the range of (?) (Average yield) ± S, (?) ± 2S, (?) ± 3S were 21,30,30,