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本文对青海3号和马牙蚕豆不同留种方式的产量、籽粒变异和田间杂异株率进行了对比试验。研究结果表明．粒选与本粒选籽种的产量无显著差异，粒选籽种后代的百粒重一般高于未位选的，青海3号粒选的百粒重为170g以上，末粒选的低于170g，马牙豆粒重粒选的为150g以上，米粒选的低于150g。粒重变异程度二者间差异不大；2品种不同留种方式的田间杂异株率均较高，达20％左右。本研究为蚕豆品种的提纯复壮提供了参考依据。
In this paper, the yield, grain variation and field heterozygosity rate of different species of Qinghai No. 3 and Maxium faberi were compared. Research indicates. No significant difference was observed between grain selection and grain selection. The 100 grain weight of grain seed selection was generally higher than that of grain selection. The 100 grain weight of Qinghai No.3 grain selection was more than 170g, 170g, horseshoe beans weight of more than 150g selected grains, rice grains less than 150g. There was no significant difference in the degree of grain weight variation between the two varieties; This study provides a reference for the purification and rejuvenation of broad bean varieties.