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以优质杂交稻宜香优2115为试验材料,设置旱育秧、旱育水寄育秧和湿润育秧等3种育秧方式处理,研究不同育秧方式对水稻产量及其构成、生育期、分蘖动态、剑叶SPAD值及干物质积累的影响。结果表明,3种育秧方式下,水稻产量旱育秧>旱育水寄育秧>湿润育秧,其中旱育秧为10.29 t/hm~2,较旱育水寄育秧、湿润育秧分别增产3.63%和8.66%;旱育秧的有效穗数较旱育水寄育秧和湿润育秧分别提高15.79%和29.41%,群体颖花量分别提高16.39%和30.51%,结实率和千粒重也略有增加。与旱育水寄育秧、湿润育秧相比,旱育秧水稻返青快、够苗期提前,抽穗期干物质重分别提高了4.10%和13.93%。
Yixianggyou 2115 with good quality hybrid rice was used as experimental material to set up three kinds of seedling raising methods such as dry-raising seedling, dry-raising seedling and wetting seedling. The effects of different seedling raising methods on yield, composition, growth period, tillering dynamics, SPAD value and dry matter accumulation. The results showed that under the three kinds of seedling raising methods, the yield of dry seedling> drought-tolerant water and seedling> wetting seedling was increased by 10.29 t / hm ~ 2 in drought-tolerant seedling, which increased 3.63% and 8.66% ; The effective spike number of dry nursery seedling was 15.79% and 29.41% higher than that of dry nursery water and seedling of wetting nursery respectively, the population spikelet amount increased by 16.39% and 30.51% respectively, and the seed setting rate and 1000-grain weight increased slightly. Compared with wet seedling and wetting seedling, drought-tolerant rice rejuvenated quickly, seedling stage was advanced and dry matter weight at heading stage increased by 4.10% and 13.93% respectively.