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我省杂交水稻种植面积正在不断扩大,繁制种的任务越来越重。为了减少往海南岛制种所需人力、物力和财力,在“立足自力更生,就地制种”的原则下,应当充分利用我省不同类型地区的气候资源,扩大早造制种当年晚造即可用于生产的制种面积,建立各种类型的制种基地。各种制种基地可以供应种子时间与需要种子地区晚造最佳播种期有较严格的界限。据近年生产实践,各类制种基地可按下列时间范围划分:可供输送省内外远程的基地,收种至用种地区晚造播种间隔25天以上;可供输送相邻地区间的基地(包括邻省地区),间隔15—20天;可供输送相邻县的基地,间隔10—15天;可供本社队的基地,间隔5—10天。近年通过对我省杂交水稻气候适应性的考察分析及小面积制种试验证明,我省大陆北回
The province of hybrid rice cultivation in our province is constantly expanding, the task of growing more and more heavy species. In order to reduce the manpower, material resources and financial resources needed for seed production in Hainan Island, we should make full use of climatic resources of different types of areas in our province under the principle of “based on self-reliance and seed production” Can be used for production of seed production area, the establishment of various types of seed production base. Seed production times at various seed production bases have more stringent limits on late sowing best seeding times in need of seed areas. According to the production practice in recent years, all kinds of seed production bases can be divided according to the following time ranges: they can be used for the transportation of long-distance bases both inside and outside the province; Including neighboring provinces) at intervals of 15-20 days; bases available for the transport of adjacent counties at intervals of 10-15 days; and bases available for the team at 5-10 days intervals. In recent years, through the analysis of the climate adaptability of hybrid rice in our province and small area seed production test proved that the mainland of our province north