| 稻粒黑粉病病株田间格局及抽样技术研究 |
| |
| 引用本文： | 邓根生,陈嘉孚,张先平,王晓娥,张吉昌.稻粒黑粉病病株田间格局及抽样技术研究[J].西北农业学报,2000,9(3):47-50. |
| |
| 作者姓名： | 邓根生 陈嘉孚 张先平 王晓娥 张吉昌 |
| |
| 作者单位： | [1]陕西省水稻研究所,汉中 [2]汉中市农技中心,汉中 |
| |
| 基金项目： | 陕西省科委资助项目,编号:96K04G1-04 |
| |
| 摘 要： | 采用聚集度指数（Ｉ、Ｃ、Ｍ＾＊、ＣＡ、Ｋ、Ｉδ）和Ｉｗａｏ及Ｔａｙｌｏｒ法,研究了稻粒黑粉病病株在稻田的空间分布型。结果表明,稻粒黑粉病病株在稻田的空间分布型呈聚集分布。在此分布型的基础上,通过调查病株密度,比较了平行线、单对角线、棋盘式及“Ｚ”字型抽样法,最后肯定平行线抽样法最好。理论抽样数量通过Ｉｗａｏ法计算公式得出不同发病率（Ｘ）所需最大的抽样稻丛数为：ｎ＝３．４６／Ｘ＋０．７１。
|
| 关 键 词： | 稻粒黑粉病 空间分布 抽样技术 稻田 病株 |
| 收稿时间： | 2000/3/23 0:00:00 |
Field Pattern of Rice Grain Smut and Its Sampling Methods |
| |
| DENG Gen-sheng,CHEN Jia-fu,ZHANG Xian-ping,WANG Xiao-e and ZHANG Ji-chang.Field Pattern of Rice Grain Smut and Its Sampling Methods[J].Acta Agriculturae Boreali-occidentalis Sinica,2000,9(3):47-50. |
| |
| Authors: | DENG Gen-sheng CHEN Jia-fu ZHANG Xian-ping WANG Xiao-e and ZHANG Ji-chang |
| |
| Institution: | Shaanxi Rice Institute, Hanzhong 723002;Shaanxi Rice Institute, Hanzhong 723002;Shaanxi Rice Institute, Hanzhong 723002;Shaanxi Rice Institute, Hanzhong 723002;Hanzhong Agricultural Technique Center, Hanzhong 723000 |
| |
| Abstract: | Aggregation indices and the methods of Iwao and Taylor were used in the study of spatial distribution patterns of the rice grain smut in the field.The result indicated that the diseased plants was in the aggregation pattern, based on this distribution pattern,the density of the diseased plants were investigated and the sampling method of parallel lines.single diagonal lines chequered and "Z" type were also compared.The results showed that the sampling method of various diseased plants (X)needed biggest sampling rice clumps: n=3.46/X+0.71. |
| |
| Keywords: | Rice gain smut Spatial pattern Sampling technique |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《西北农业学报》浏览原始摘要信息 |
| 点击此处可从《西北农业学报》下载免费的PDF全文 |
|
