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我县地处闽西北,是个地多人少的山区,地势错综复杂,气候变化大,秋寒来得早,影响晚季制种。根据历年资料分析,选择在五月中旬到八月下旬,这段时间进行中稻制种,可获得较为理想的杂优种子产量。全县十七个制种点,共配制国际24×威41A 组合面积31.75亩,平均亩产61斤,其中龙湖一队3.8亩制种田,亩产达到111.8斤。中稻制种的优点:六至八月份气温满足父母本生长发育需要,恢复系和不育系生长期比较稳定,容易掌握播种错期;抽穗安全;有利隔离防杂保纯;有利于调节劳力。“闽优一号”中稻制种,根据今年生产实践,我们初步体会是:花期相遇是关键,丰产栽培是基础,调节花期要及时,刈叶授粉增产量。
My county is located in northwestern Fujian, is a mountainous area with many people and few people. The terrain is complicated and the climate change is big. Autumn fall comes earlier, affecting late-season seed production. According to historical data analysis, choose mid-May to late August, during this period for medium-cropping, you can get a better hybrid yield. The county’s seventeen seed production points, a total of preparation of international 24 × Wei 41A combination of 31.75 acres of land, the average yield of 61 pounds, of which a team of 3.8 acres of Longhu farming, yield of 111.8 pounds per mu. Mid-season rice seed production advantages: June to August temperature to meet the growth and development needs of parents, restorer lines and sterile lines of relatively stable growth period, easy to grasp the sowing time; heading safe; conducive isolation and isolation of impurities; is conducive to the regulation of labor. According to this year’s production practice, our initial experience is: the flowering is the key, high-yielding cultivation is the foundation, to adjust the flowering in time, pollination by the yield of the pollination.