论文部分内容阅读
在杂交稻制种中,采用单式行比的常因父本偏弱而花粉量偏小,致使制种产量在150公斤左右徘徊。1992年,采取多项措施攻父本,创建穗多穗大粒多的父本群体,从而大幅度提高了父本花粉量,使春夏季制种产量由原来的150公斤左右提高到200公斤以上,高产的D优63亩产达到了224公斤。其攻父本的措施是: 1.中苗带大,两段育秧 (1)中苗下水田,湿润秧田作苗床。苗床采用湿润秧田,每公斤父本播12平方米,复盖薄膜,周围作埂,旱育管理,育苗至4～4.5叶。
In the hybrid rice seed production, the use of single-line ratio often due to weak male parents and pollen amount is small, resulting in seed production hovering around 150 kg. In 1992, we took a number of measures to attack our father and father to create a paternal population with many spikes and large grains, which greatly increased the amount of male pollen and increased the production of spring and summer seeds from about 150 kg to over 200 kg. D yield 63 acres of high-yield reached 224 kilograms. The attack his father’s measures are: 1. With a large seedlings, two sections of seedlings (1) seedlings paddy fields, wet seedlings for seedbed. Seedbed with wet seedling, per kilogram of parental sowing 12 square meters, cover film, around the crop, drought management, nursery to 4 ~ 4.5 leaves.