CAJ | 학술논문

选用湖北省荆门市具有代表性的籼型杂交中稻和常规中稻品种与新引进的粳稻组合或品系进行对比试验,共设4个品种6个播期. 结果表明,随着播期的推迟水稻全生育期不同程度地缩短,出叶速度加快而主茎总叶片数变化较小;籼型杂交中稻早播有利于取得高产,粳型杂交组合产量高低受播期影响较小,早熟中籼稻和中晚熟粳稻常规品种不宜过早播种,品种与播期对产量的交互效应极显著. 改变水稻播期首先会影响到结实率和每穗平均总粒数,其次是单位面积有效穗数,欲夺取水稻高产,应在保证一定有效穗数的前提下,主攻大穗和提高结实率.
선용호북성형문시구유대표성적선형잡교중도화상규중도품충여신인진적갱도조합혹품계진행대비시험,공설4개품충6개파기. 결과표명,수착파기적추지수도전생육기불동정도지축단,출협속도가쾌이주경총협편수변화교소;선형잡교중도조파유리우취득고산,갱형잡교조합산량고저수파기영향교소,조숙중선도화중만숙갱도상규품충불의과조파충,품충여파기대산량적교호효응겁현저. 개변수도파기수선회영향도결실솔화매수평균총립수,기차시단위면적유효수수,욕탈취수도고산,응재보증일정유효수수적전제하,주공대수화제고결실솔.
A total of 4 rice varieties, the local representative insica hybrid varieties, conventional middle rice varieties and the newly introduced japonica varieties, were selected and comparison experiments with 6 planting dates were carried out. The results showed that, with the delay of sowing date, the whole growth period of rice shortened in different degree and the leaves emerged faster. However, the leaf number of main culm presented small changes. Early sowing was conducive to high yield for the insica hybrid mid-season rice, while affected the yield of japonica hybrid combinations less. The early in-sica rice and late japonica rice of conventional varieties should not be sowed early because the interaction effect of varieties and sowing date was significant. The change of the sowing date of rice would firstly affect the setting percentage and the av-erage total grain number, followed by the effective panicles per unit area, so in order to obtain the high yield of rice, the premise of a certain amount of efficient panicle should be in the guarantee and then the big ears and the setting percentage be focused.