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作 者:赵加涛[1] 刘猛道[1] 杨向红[1] 付正波[1] 字尚永[1] Zhao Jiatao;Liu Mengdao;Yang Xianghong;Fu Zhengbo;Zi Shangyong(Baoshan Institute of Agricultural Sciences, Baoshan Yunnan 678000)
出 处:《中国农学通报》2018年第33期21-24,共4页Chinese Agricultural Science Bulletin
基 金:国家大麦青稞产业技术体系项目"大麦青稞体系保山综合试验站"(CARS-05)
摘 要:为了探索不同棱型大麦品种混种的增产机理及效果,以保山市大面积推广的多棱品种‘保大麦14号’、二棱品种‘82-1’为材料,设5个处理,进行单种和混种比较试验。结果表明,混种能充分利用空间和光能,从而提高产量,产量比单种二棱矮秆品种增加139.5~719 kg/hm^2,比单种多棱高秆品种增加40.5~720 kg/hm^2;产量构成因素中,混种的有效穗与单种二棱品种(单种中有效穗最多)相近,穗实粒数比单种二棱矮秆品种增加7.8~10.7粒,千粒重比单种多棱高秆品种增加1.2~5.5 g,同时,混种还能减轻倒伏;二棱品种‘82-1’与多棱品种‘保大麦14号’混种基本苗最佳比例为6:4(折合种子重量≈7:3)。To explore the mechanism and effect of yield increase by mixed sowing of different prismatic barleyvarieties, multi prismatic variety‘Baodamai 14’and double prismatic variety‘82-1’which have beenpromoted in large areas of Baoshan City, are used as materials. 5 treatments are set up with single sowing andmixed sowing. The results showed that mixed sowing sufficiently utilized the space and light energy to increasethe yield, the yield of mixed sowing increased by 139.5-719 kg/hm^2 compared with the single sowing of doubleprismatic variety, and increased by 40.5-720 kg/hm^2 compared with single sowing of multi prismatic variety. Inyield components, the effective spikes of mixed sowing were similar with that of the single sowing of doubleprismatic variety(the maximum effective spikes appeared in the single sowing). The actual grain number ofspikes increased by 7.8-10.7 compared with the single sowing of double prismatic variety. 1000-grain weightincreased by 1.2-5.5 g compared with single sowing of multi prismatic variety. Moreover, mixed sowing couldreduce lodging. The best ratio of basic seedlings with mixed sowing(double prismatic variety‘82-1’and multiprismatic variety‘Baodamai 14’) was 6:4(convert into seed weight≈7:3).
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