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本文用相关分析、协方差分析和偏回归方程分析的方法,分析了福建水稻高产区——龙溪地区1978、1979两年杂交水稻亩产1100斤以上的197块高产田的产量构成因素和群体动态结构,结果如下: 1、汕优2号、四优2号早、晚季都表现产量与总粒数、产量与结实率的偏相关达显著水准。总粒数与结实率、总粒数与千粒重之间成极显著的负偏相关。但总粒数与总实粒数成极显著的正相关,因此,增加总粒数,即使结实率和粒重有所下降仍然增产。 2、增加总粒数是在一定穗粒数的基础上,通过增加有效穗来达到。 3、汕优2号、四优2号的有效穗与总粒数成极显著正相关,基本苗数与有效穗数的关系也非常密切,即亩基本苗在1.5—12万范围内,基本苗愈多,有效穗愈多,总粒数愈多。 4、高产田群体的动态结构是按1:3:2的苗、株、穗比例,亩产1400斤的总粒数为2900万(汕优2号)与3100万(四优2号)。
In this paper, the correlation analysis, covariance analysis and partial regression equation analysis method was used to analyze the yield components and groups of 197 high-yield fields with more than 1100 kg per mu of hybrid rice in 1978 and 1979 in Longxi, Fujian. Dynamic structure, the results are as follows: 1, Shanyou 2, Siyou 2 early and late performance performance and total grain number, yield and seed set the partial correlation reached a significant level. Total grain number and seed setting rate, total grain number and grain weight were extremely significant negative correlation. However, the total grain number was significantly and positively correlated with the total grain number. Therefore, increasing the total grain number increased the yield even though the seed setting rate and grain weight decreased. 2, increase the total number of grains is based on the number of grains per spike, by increasing the effective panicle to achieve. The effective spikes of Shanyou 2 and Siyou 2 were significantly and positively correlated with the total grain number. The relationship between the basic number of sprouts and the effective panicle number was also very close, that is, the basic seedling number was within the range of 1.5-12 million mu The more seedlings, the more effective spike, the more the total number of grains. 4, The dynamic structure of high-yielding field population is 1: 3: 2 of seedlings, strains, spike ratio, the total yield of 1400 kg per mu for 29 million (Shanyou 2) and 3100 (Siyou 2).