康巴老芒麦种子繁育关键技术研究  

Research on Key Technology of Elymus sibiricus Kangba Seed Breeding

作　　者：龙兴发 李太强 蒋忠荣 朱连发 杨秀全 叶忠明 刘曦 何剑 

机构地区：[1]四川省甘孜藏族自治州畜牧业科学研究所,四川康定626000 [2]四川省甘孜藏族自治州乾宁种畜场,四川道孚626401

出　　处：《草业与畜牧》2014年第1期5-12,共8页Pruataculture & Animal Husbandry

基　　金：四川省甘孜州科技攻关项目(NO.2011101)资助

摘　　要：通过对康巴老芒麦的种植方式、不同行距、不同追肥量、不同基肥和多效唑等种子生产关键技术对康巴老芒麦种子生产性能的影响研究,结果表明:分蘖-拔节期追施120kg/hm2复合肥可提高老芒麦种子生产性能;50cm行距时老芒麦种子产量最高达1 440kg/hm2,40cm行距时老芒麦牧草产量最高达10 170kg/hm2;180kg/hm2复合肥较150kg/hm2牛羊粪更有利于老芒麦种子生产;在孕穗期喷施PP333可明显降低植株高度,减少倒伏,提高种子产量,但高浓度处理对种子生产不利,多效唑处理对种子千粒重影响较小。This article the effects of different row spacing, different topdressing quantity, different base fertilizer and PP333 on seed production performance of Elymus sibiricus Kangba were studied. And the results showed that dressing complex fertilizer 120kg/hm2 could improve its production performance at the tillering and jointing stage, the seed yield of Elymus sibiricus Kangba could be up to 1440kg/hm2 when the row spacing was 50cm, and the grass yield could be up to 10 170kg/hm2 when the row spacing was 40cm.The compound fertilizer 80kg/hm2 was better than the organic fertilizer 150kg/hm2 from cow and sheep for seed production of Elymus sibiricus Kangba, and applying PP333 could decrease the height of plant obviously and reduce lodging, and increase the seed yield, but the high concentration of PP333 was not favorable to seed production, and the treatment of PP333 did not affect the thousand grain weight.

关 键 词：康巴老芒麦 行距 肥料 多效唑 种子生产性能 

分 类 号：S543.038[农业科学—作物学]