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:引进长穗颈协青早A不育系 (以下简称“长协A”)与恢复系“44 80”进行春季制种试验 ,获得了成功。同时进行了“九二 0”不同用量的对比试验 ,试验结果表明 :在不喷施“九二 0”的条件下 ,“长协A/ 44 80”的制种产量比“协青早A/ 44 80”增加 483.35kg/hm2 ,增幅达 5 2 .73%。在喷施 30g/hm2 “九二 0”的条件下 ,“长协A/ 44 80”的制种产量可达31 0 5 .90kg/hm2 ,比“协青早A/ 44 80”增产 81 .5 2 %
: The experiment of seed production in spring was carried out with the introduction of CMS line A CMS A (hereinafter referred to as “Chang Association A”) and the restorer line “44 80” for success. At the same time, the comparative experiments of different dosage of “920” were carried out. The results showed that the seed production of “Long Association A / 44 80” was lower than that of “Xieqingzao A / 44 80 ”increase 483.35kg / hm2, an increase of 52.73%. Under the condition of spraying 30g / hm2 of “920”, the seed production of “Long Association A / 44 80” reached 31 0 5 .90kg / hm2, which increased 81% compared with “Xie Qing Zao A / 44 80”. 5 2%