水稻杂交授粉通常都是手工操作,获得供遗传研究的大量杂交种子是要化费很多时间的。采用接触法(Approach mehod)大大地增加了杂交结实率,缩短了时间和减少了所需亲本材料。杂交工作绝大多数是在温室进行的,从9月到12月或是1月至4月,这段短日照时间对各种感光不同的品种都能较易地授粉。在秋季作杂交,子一代在来年春天生长,同年夏 Hybrid rice pollination is usually handled by hand, obtaining a large number of hybrid seeds for genetic research is to spend a lot of time. The Approach mehod greatly increases seed setting, shortens the time and reduces the amount of parent material required. The vast majority of hybridization work is carried out in the greenhouse, from September to December or January to April, this short daylight time for a variety of different varieties of light can be more easily pollination. In the fall for hybrids, the next generation of children grow in the spring of the following year, the same summer