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分析了阜阳点1985-1989年5年夏玉米区域试验共45个杂交组合的产量与穗粒结构关系.结果表明:当亩产量自243.56公斤增加到445.37公斤时,起主要作用的是千粒重,其次是行粒数、穗数、穗长.当亩产量自445.37增加到665公斤时,起主要作用的是行粒数和穗行数的增加,千粒重保持在300克以上水平.因此,在选配亩产500公斤以上的玉米杂交组合时,需要协调好穗行数、行粒数和千粒重的关系,使千粒重保持在300克的前提下,应着重对穗行数和行粒数多的选择.
The relationship between grain yield and grain structure of 45 cross combinations in the summer maize regional trial of 1985 in 1985 was analyzed.The results showed that when the yield per mu was increased from 243.56 kg to 445.37 kg, Is the number of rows of grain, spike number, spike length.When the mu yield increased from 445.37 to 665 kg, the main role is to increase the number of rows of grain and ear number, 1000 grain weight remained at 300 grams above the level of Therefore, When producing more than 500 kg of maize, it is necessary to coordinate the relationship between the number of rows per ear, the number of rows per plant and the value of 1000-grain weight so as to keep the 1000-grain weight at 300 grams.