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两优E32 (广城 1号 )水稻新组合在越南河西省制种 ,其父母本播期差在 13d左右 ,父本E32播种至始穗天数为 78～ 80d ,母本培矮 6 4S播种至始穗天数为 6 4～ 6 6d。父母本栽插行比以 2∶16最佳 ,制种产量最高 ,为2 .5 7t hm2 ,较 2∶12行比增产 4 3.5 8% ;对母本培矮 6 4S喷施不同量“九二○” ,以 80 0g hm2 用量最佳 ,制种产量高达 3.12t hm2 ,每穗实粒数 5 8粒 ,结实率 36 .94 % ;扬花期割叶没有明显的增产效果 ;扬花期防治稻粒黑粉病 ,可使每穗少 5粒病粒 ,可增加优质种子 2 2 8.8kg hm2 。
The new hybrid rice combination Liangyong E32 (Guangcheng 1) was planted in Hexi Corridor, Vietnam. The difference in sowing date between parents was about 13d, that of male parent E32 was 78 ~ 80d, and that of Pei’ai Pei’ai 6 4S The ear number of days is 6 4 ~ 6 6d. Parents than parents planted line best than 2:16, the highest seed production, for 2.57t hm2, compared with 2:12 than the yield increase of 3.58%; on the female Pei Pei 6 4S spraying different amount of “nine 20 ”, the best dosage was 80 0 hm2, the seed yield was up to 3.12 t hm2, the number of grains per spike was 58, and the seed setting rate was 36.94%. There was no significant increase effect on cutting leaves in flowering stage; Black powdery mildew, can make less 5 grains per ear, can increase the quality of seed 2 2 8.8kg hm2.