早籼不育系351A高产繁殖技术

The Technique of Rice Sterile Line 351A Seed Multiplication with High Yield

35 1A是安徽省农科院育成的新型早熟早籼不育系。该不育系育性稳定 ,米质优 ,抗白叶枯病 ,柱头外露率高 ,配合力好。经几年的实践 ,总结出一套较成熟的高产繁殖技术 ,1997～ 1999连续 3a繁殖单产达 3 .375t/hm2 ,最高单产达 4.0 5t/hm2 。高产繁殖技术主要有 :合理安排抽穗扬花期 ;控制秧龄 ,稀播早栽 ;高肥配比早施 ,加强病虫防治 ;推迟使用“九二○” ,更新赶粉方式 ;严格除杂 。

Indicia rice sterile line, 351A, was bred by AAAS. The character of 351A was the stability of fertility, good quality of rice grain, early maturation, resistant to bacterial leaf blight, high rate of outer stigma and strong combining ability. A set of sound technique of seed multiplication with high yield had been obtained through several years practice. The yield of seed multiplication was as high as 3.375 t/hm2 and the highest yield was 4.05t/hm2 in 1997～1999, which included the reasonable arrangement of flowering period, the control of seedling age, sparsely and early transplanting and much more fertilizer and so on.