通过几年来杂交水稻制种的实践,造成产量不高的原因很多,其中穗数不足是主要原因。为进一步挖掘制种潜力,在优质的前提下,由低产变高产和稳产,并逐步简化制种技术。去年我们对杂交制种的母本栽植本数与产量关系进行了试验研究,结果表明: 一,杂交水稻制种产量随着母本基本苗的增加而速增。母本栽植一本的亩产150斤,栽植二本的亩产177斤,栽植三本的亩 Through several years of practice of hybrid rice seed production, resulting in low yield for many reasons, including the lack of spike is the main reason. In order to further tap the potential of seed production, under the premise of high quality, high-yielding and stable yielding should be made from low-yielding to low-yielding, and the seed production technology should be gradually simplified. Last year, we conducted a pilot study on the relationship between the seed number and yield of hybrid seed production. The results showed that: First, the hybrid rice seed yield increased rapidly with the increase of the basic seedlings of the female parent. The mother planted a per mu 150 pounds, planted two acres of 177 pounds, planting three acres