Abstract:

In order to study the effects of different planting patterns on yield and growth of ratoon rice, an experiment was conducted using Liangyou 6326 and Yueyou 9113 as materials. The results showed that, compared with carpet seedling mechanical transplanting rice and hand transplanting rice, the seedling quality of pot-seedling mechanical transplanting rice was better，earbering tiller percentage and grain number increased significantly, the yield of Liangyou 6326 increased by 13.4% and 12.1%, the yield of Yueyou 9113 increased by 12.8% and 12.7%, respectively. Using pot-seedling mechanical transplanting technique on ratoon rice could save cost,  improve efficiency and increase yield significantly in South Henan province.

Key words: planting pattern, main crop rice, ratoon rice, yield

摘要：

以两优6326和岳优9113为材料，研究了豫南稻区两种主要水稻机插方式对再生稻生长及产量的影响。结果表明，钵苗机插能够显著提高秧苗素质，立苗活棵快，分蘖发生早，群体茎蘖增减平稳，成穗率显著提高，头季稻成熟期提前6～7 d，头季稻穗粒数较毯苗机插和手插明显增加，从而显著提高水稻产量；钵苗机插方式下，再生季的生育期较毯苗机插秧和手插提前2～4 d，再生穗率、再生穗粒数、结实率也显著提高。在钵苗机插方式下，两优6326两季产量为13 973.6 kg/hm2，较毯苗机插和手插方式分别增产13.4%和12.1%；岳优9113两季产量为14 443.6 kg/hm2，较毯苗机插和手插分别增产12.8%和12.7%。豫南稻区再生稻生产采用钵苗机插栽培方式，能够起到节本增效，提高水稻产量的效果。

关键词: 栽插方式, 头季稻, 再生稻, 产量