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以两系超级杂交水稻(Oryza sativa L.)桂两优2号为供试品种,通过田间研究比较常规耕作和粉垄耕作条件下水稻生长及生理特性。结果表明,粉垄耕作方式有利于水稻植株分蘖中后期的分蘖生长,全生育期白根多、活力强,叶绿素相对含量(SPAD)极显著高于常规耕作,叶片净光合速率高,并且持绿时间长,利于光合同化物的生产积累;成熟期地上部干物质积累量显著高于常规耕作,有效穗较常规耕作多27.6万/hm~2,因而产量增加显著,增产约20.36%。
Two lines of super rice hybrid rice (Oryza sativa L.) Guiliangyou 2 were used as tested cultivars. Field experiments were conducted to compare the growth and physiological characteristics of rice under conventional and powder ridge cultivation. The results showed that the tillage patterns of flour ridges were beneficial to the tillering growth in the middle and late tillering stage of rice plants. The white root and more vigor in the whole growth period, the relative content of chlorophyll (SPAD) were significantly higher than that of conventional tillage and the net photosynthetic rate of green leaves Long and conducive to the production and accumulation of photosynthate. The accumulation of dry matter in shoots in mature stage was significantly higher than that in conventional tillage. The effective spike was 276,000 / hm ~ 2 more than that of conventional tillage, and the yield increased significantly by 20.36%.