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我市引种以来,经试验、示范和大面积推广,证明水稻“8优161”是高产、稳产、优质、多抗、适应性好的杂交粳稻良种。但近几年来,在制种和大面积推广中,时而出现发芽率不高、发芽势不好,直接影响出苗率、成苗率,为高产制种和高产示范带来一定影响。为摸清原因,寻找解决这方面的问题,我们采用试验和实地调查等方法,获得了解决水稻“8优161”发芽率不高,发芽势不好的问题。1 造成稻种发芽率、发芽势不高的原因1.1种子成熟未及时收脱,导致米粒增加,影响发芽势、发芽率“8优161”的制种田种子,如收割过迟,
Since the introduction of our city, the experiment, demonstration and large-scale popularization have proved that “8 You 161” is a high-yielding, stable yield, high-quality, multi-resistant and adaptable hybrid japonica rice. However, in recent years, in the seed production and large-scale promotion, there are occasional germination rate is not high, the germination potential is not good, a direct impact on the emergence rate, seedling rate for high-yielding seed and high yield demonstration to some extent. In order to find out the reasons and find solutions to these problems, we adopted the methods of field experiments and field surveys to solve the problem of low germination rate and poor germination potential of rice “8 You 161”. 1 causes the rice seed germination rate, the reasons for the low germination potential 1.1 seed ripe not close in time, resulting in increased grain, affect the germination potential, germination rate “8 You 161” system of seed farming, such as harvest too late,