抗虫杂交棉新组合6H_1利用价值研究初报

对本中心选育的抗虫杂交棉６Ｈ１的利用价值进行研究，结果表明，不治虫条件下，二代棉铃虫发生期棉株顶心被害率６Ｈ１Ｆ１为３３％，对照为３３２％。皮棉产量为对照的４１倍。棉铃虫发生高峰期治一次虫，产量为对照的３倍。正常防治条件下比对照增产４２４％。各种治虫水平的霜前花产量均极显著高于对照。其Ｆ２有分离，抗虫性和产量明显低于Ｆ１，但远高于对照

Preliminary Report on Utilization Value of the New Combination 6H 1 of Insect_resistant Hybrid Cotton

Study on the insect_resistant hybrid cotton 6H 1 showed that without insect control during the second generation of cotton bollworm,the percentage of injury of 6H 1F 1 plants was 3.3%(the check 33.2%)and the lint yield was 4 1 times as much as that of the check,and 3 times while controlling one time during bollworm peak occurrence,and an increase of 42.4% over the check with normal insect management.Under different insect control levels,pre_frost lint yields were high significantly more than that of the check.With separation,the insect_resistance and yield were all obviously lower than that of F 1,but much higher than that of the check.