郭世保, 黄丽丽, 康振生, 程晶晶, 杨之为. 小麦品种混播条件下条锈病发生、扩展研究[J]. 中国生态农业学报(中英文), 2010, 18(1): 106-110. DOI: 10.3724/SP.J.1011.2010.00106
引用本文: 郭世保, 黄丽丽, 康振生, 程晶晶, 杨之为. 小麦品种混播条件下条锈病发生、扩展研究[J]. 中国生态农业学报(中英文), 2010, 18(1): 106-110. DOI: 10.3724/SP.J.1011.2010.00106
GUO Shi-Bao, HUANG Li-Li, KANG Zhen-Sheng, CHENG Jing-Jing, YANG Zhi-Wei. Occurrence and expansion of wheat stripe rust under mixed-cultivar planting[J]. Chinese Journal of Eco-Agriculture, 2010, 18(1): 106-110. DOI: 10.3724/SP.J.1011.2010.00106
Citation: GUO Shi-Bao, HUANG Li-Li, KANG Zhen-Sheng, CHENG Jing-Jing, YANG Zhi-Wei. Occurrence and expansion of wheat stripe rust under mixed-cultivar planting[J]. Chinese Journal of Eco-Agriculture, 2010, 18(1): 106-110. DOI: 10.3724/SP.J.1011.2010.00106

小麦品种混播条件下条锈病发生、扩展研究

Occurrence and expansion of wheat stripe rust under mixed-cultivar planting

  • 摘要: 在田间分别设计6个小麦品种单播及其9个组合混播小区, 研究条锈病在小麦混播群体中的发生、扩展情况及品种混播对条锈病的控制效果。结果表明, 苗期品种混播小区发病中心的数量明显减少, 条锈病发病中心越冬率达77.78%, 单片病叶也可越冬。品种混播降低了条锈病传播距离, 条锈病在各小区呈中心式分布。品种混播在孕穗期的相对防效为16.25%~58.89%, 平均为35.31%。相对防效以“陕138”和“西农979”品种混播及“陕138”、“小偃22”和“西农889”品种混播最高, 分别达58.89%和52.19%。品种混播对小麦条锈病有较好的控制效果, 可作为生态防病措施之一。

     

    Abstract: Six mono-cultivar planting treatments and nine mixed-cultivar planting treatments were designed to study the occurrence and expansion of wheat stripe rust (Puccinia striiformis f. sp. tritici) and control effect of mixed-cultivar planting. The results indicate that the number of foci at seedling stage obviously reduces under mixed-cultivar planting compared with mono-cultivar planting. Over-wintering rate of foci is 77.78% and a few single diseased leaves survive after winter. The spreading distance of stripe rust is shorten on mixed-cultivar plots. Stripe rust shows a trait of central distribution in different plots. Relative efficacy of mixed-cultivar planting at booting stage ranges from 16.25% to 58.89%, with a mean value of 35.31%. “Shaan 138” and “Xinong 979” mixed-planting, and “Shaan 138”, “Xiaoyan 22” and “Xinong 889” mixed-planting show the highest relative efficacy, which is 58.89% and 52.19% respectively. Mixed-cultivar planting has a higher control effect on wheat stripe rust than mono-cultivar planting. Mixed-cultivar planting can thus be used as a good ecological measure in disease prevention and control.

     

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