一九七六年春季,我们搞了一项小面积制种试验,从中寻找规律,为二晚大面积制种提供依据.在0.2亩南优2号试验田中,由于父本偏迟,6月9日采取母本割叶、施偏肥、控蔸(松动禾蔸,拔起重栽)、拔主穗和父本喷“九二○”等五种处理进行对比,以不作任何处理的为对照。试验结果以父本喷“九二○”效果最好,花期相遇达87.6%,比 In the spring of 1976, we conducted a small-area seed production experiment to find out the law and provide a basis for large-scale seed production in the second night. In a trial of 0.2 mu Nan You No.2, On the 9th, we compared the five treatments of cutting leaves, applying partial fertilizer, controlling 蔸 (loosening Wo 蔸, pulling up replanted plants), pulling main ear and spraying “九二 ○” Control. The test results to the father of the spray “nine two ○” the best, flowering reached 87.6%, compared with