论文部分内容阅读
长期以来,修水县杂交水稻制种,亩产仅20～30公斤,需从外地大量调种。1987年,秋制汕优64、成优64、威优49共7106亩,亩产152.2公斤,首次实现杂交水稻种自给有余。在夺取杂交水稻制种高产的过程中,重点改革了施肥技术,定向培育理想株型,对促进制种高产,起了重要作用。杂交水稻制种施肥与常规栽培施肥,既有共性,又有其个性。制种双亲异株,需要通过施肥,增强植株健壮,提高母本柱头生命力;通过施肥,定向培育理想株型,以利授粉;通过施肥,协调父母本生育平衡,达到花期、花时相遇。近几年的生产实践和试验研究,我们将杂交水稻制种的施肥特点,概括为“四要、四结合”。
For a long time, Xushui County hybrid rice seed production, only 20 to 30 kilograms per mu, a lot of adjustment from the field. In 1987, autumn Shanyou 64, Cheng You 64, Weiyou 49 a total of 7106 acres, 152.2 kilograms per mu, for the first time hybrid rice self-sufficiency. In the process of seizing high yield of hybrid rice seed production, emphasis has been given to reforming the fertilization technology and orienting the ideal plant type, which plays an important role in promoting the high yield of seed production. Hybrid rice seed production and conventional fertilization, both common, but also their personality. Through the application of fertilizers, it is necessary to cultivate the ideal plant type to facilitate pollination; to coordinate the balance of parental reproduction through fertilization to achieve the flowering and flowering encounters. In recent years, production practices and experimental studies, we will hybrid rice seedling fertilizer characteristics, summarized as “four to four combined.”