【摘要】 高产早籼新品种“中铁31”,是用注量为（1.33～3.33）×10¹¹中子/cm²的快中子辐照常规水稻“铁秋15”干种子,经五代选育而成,比原种早熟3～5天,植株增高10cm,穗大粒多,增产19.2～30.7%。用同工酶遗传学论证了“中铁31”新品种的来源。在大田生产试验,它比高产常规水稻“桂朝2号”和杂交水稻“汕优2号”增产7～10%,且饭味可口。“中铁31”于1986年7月通过省级鉴定,当年推广面积达25万亩（1.67×10⁸m²）。更多还原

【Abstract】 The high-yield and long-grain new variety "Zhongtie 31" was developed through five generations after irradiation of the rice variety "Tieqiu 15" dried seeds by 14 MeV fast neutrons with a fluence of (l.33-3.33) X1011 neutrons cm-1. It matured earlier 3 to 5 days, the plant is 10 cm higher,’ bigger ear, more grain than its original variety "tieqiu 15" , and the yield increased by 19.2% to 30.7%. The source of new variety "Zhongtie 31 was proved by the isoenzyme genetics. In field test,it increased by 7% to 10% was compared with high-yield variety "Guichao No.2" and the hybrid rice "Shanyou No.2" , and is more palatable. The new variety was initiated by irradiation mutagensis routine rice,its well-grown and bumper-yield performances may be compared favourably with hybrid rice variety. In July 1986, the new variety "Zhongtie 31" was obtained by inducing mutation with fast neutron, it was first carried provincial appraisal in our country. The same year, the planted area of "Zhongtie 31" has achieved upto 250 thousand mu (1.67X 108m2) .更多还原