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本文所研究的是红莲华矮15不育系配制的两个早籼杂交组合对~(32)P的吸收与分配情况。结果表明杂交水稻在齐穗期之前对~(32)P 的吸收和运输到穗、叶中去的量都要明显地高于亲本不育系和恢复系,而到了乳熟期之后则低于其亲本。此外.除了不育系外,在各供试材料中,早期分配到剑叶中的~(32)P 并不高于倒数第二叶,而到了乳熟期,分配到剑叶中的~(32)P的量远大于倒数第二叶。根据研究结果认为,在杂交水稻的生产中应注意中后期的水肥管理,防止早衰,并保证磷素的供给,对于杂交水稻获得高产是很重要的。
In this paper, the absorption and distribution of ~ (32) P in two early indica hybrid combinations were studied. The results showed that the amount of uptake and transport of ~ (32) P in panicle and leaves of hybrid rice before heading to heading stage was significantly higher than that of the parental line and restorer line, but was lower after milky-ripening stage Its parents. In addition, in addition to CMS lines, ~ (32) P, which was distributed early in the flag leaves, was not higher than the penultimate leaf in all the tested materials, but ~ 32) The amount of P is much larger than the penultimate leaf. According to the results of the study, it is important to pay attention to the management of water and fertilizer in the middle and later stages of hybrid rice production to prevent premature aging and ensure the supply of phosphorus, which is very important for obtaining high yield of hybrid rice.