水稻遗传多样性栽培控制稻瘟病的灰色评价  

Grey Comprehensive Evaluation on Inter-Planting Systems of Genetic Diversity Controlling Rice Blast Diseases

作　　者：何汉明[1] 房辉[1] 周惠萍[1] 谢勇[1] 刘林[1] 冯建孟[2] 李成云[1] 朱有勇[1] 

机构地区：[1]农业生物多样性与病虫害控制教育部重点实验室,云南农业大学,云南昆明650201 [2]大理学院生命科学与化学学院,云南大理671000

出　　处：《西南农业学报》2010年第3期724-727,共4页Southwest China Journal of Agricultural Sciences

基　　金：国家973计划资助项目(2006CB100200)

摘　　要：作物的遗传多样性间栽模式对改善农田生态环境,防止或减轻病害的发生具有重要意义。病害发生过程是一个多因子互作的不确定性的灰色系统,本文利用水稻间栽模式下的8个田间生态指标,根据灰色理论和方法对各生态指标与糯稻冠层孢子捕捉数进行灰色关联度和权重的分析,并对不同混栽模式下的上述各指标进行综合评价。研究结果表明,糯稻冠层稻瘟病孢子捕捉数与田间风速和湿度的灰色关联度较大,其次温度,光照强度和光合有效辐射的灰色关联度最小。此外,随着糯稻和杂交稻行比的增加,反映间作生态系统抑制或降低病害发生的综合评价指数呈递增趋势。由于灰色系统理论具备传统数理统计方法不具有的处理贫信息和非正态分布等不确定性数据的优势,因此,本研究结果具有相对较高的可信度。Intercropping plays a significant role for improving farmland microclimate and to lighten disease.The course of disease happened was a grey system with uncertain multi-factor interacting.In this paper,duing to the eight farm ecological indices,correlation analysis between sporules quantity of rice blast with others and comprehensive evaluation of models of rice intercropping were achieved by the theory of grey system.The results indicated that the larger correlation of sporules quantity in glutinous rice corona with wind speed and humidity of farmland and the minimum correlation with temperature in the next place and the minimum correlation with illumination intension and PAR was observed.The comprehensive evaluation indices reflecting that intercropping lighten disease was increased by the mating coefficient of glutinous rice with hybrid rice.The theory of grey system had the advantageous of deal with poor information and abnormal distribution data than traditional methods of mathematical statistics,therefore,the result of our research was credible.

关 键 词：间栽 稻瘟病 生态指标 灰色关联分析 灰色综合评价 

分 类 号：S435.111.41[农业科学—农业昆虫与害虫防治]