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| 玉米弯孢菌叶斑病产量损失估计模型的研制 | |
| 引用本文： | 傅俊范,白元俊,孟凡祥,李素莉,牟连晓,薛敏菊,严雪瑞,王涛,李朝辉,陈荣丽.玉米弯孢菌叶斑病产量损失估计模型的研制[J].沈阳农业大学学报,2000,31(5):468-471. |
| 作者姓名： | 傅俊范 白元俊 孟凡祥 李素莉 牟连晓 薛敏菊 严雪瑞 王涛 李朝辉 陈荣丽 |
| 作者单位： | 1. 沈阳农业大学,辽宁,沈阳,110161 2. 辽宁省农科院,辽宁,沈阳,110161 3. 辽宁省科学技术委员会,辽宁,沈阳,110015 4. 辽宁省植保站,辽宁,沈阳,110034 |
| 基金项目： | 辽宁省自然科学基金(9910100301) |
| 摘 要： | 采用不同菌源梯度人工接种的方法，在田间造成玉米弯孢菌叶斑病流行动态不同的１８个发病小区，分析各期病情指数与产量构成因子之间的相关性，结果表明：玉米弯孢菌叶斑病对玉米面粒重、单穗重和产量都有显著影响，产量损失率与病情指数呈正相关，产量损失率最高可达３８．２４％，而病情指数对穗数没有直接影响。利用电子计算机ＳＰＳＳ统计分析软件构建了两个玉米弯孢菌叶斑病产量损失估计模型：（１）关键期病情模型（ＣＰＭ），Ｌ＝２．８２１９＋０．７４０２ｘ１（Ｒ＝０．８７９９，ＳＤ＝５．２１４９，Ｎ＝１８）。（２）多期病情模型（ＭＰＭ）：Ｌ＝１．０７３＋０．４２６ｘ１＋０．１７０ｘ２（Ｒ＝０．８９２，ＳＤ＝５．２８９８，Ｎ＝１８）。式中：Ｌ为玉米产量损失率；ｘ１为授粉期病情指数；ｘ２为灌浆后期病情指数。 |
| 关 键 词： | 玉米 弯孢菌叶斑病 产量损失 估计模型 |
| 文章编号： | 1000-1700(2000)05-0468-04 |
| 修稿时间： | 2000年8月26日 |
The Yield Loss Models of Maize Leaf Spot Caused by Curvularia Lunata |
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| FU Jun-fan,et al.The Yield Loss Models of Maize Leaf Spot Caused by Curvularia Lunata[J].Journal of Shenyang Agricultural University,2000,31(5):468-471. | |
| Authors: | FU Jun-fan |
| Abstract: | different cases epidemic plots of maize leaf spot caused by Curvularia lunata were simulated by artificial inoculation in the field. The percentages of yield loss were got by comparing the yield of the diseased plots with that of the corresponding check plots. The result showed that the disease caused the significant reduction in the 100 grain weight, the ear weight and the plot yield. and no effect to the ear number. The yield loss ranged 1.18%-38.24% depending on the diseased indexes. By means of SPSS to regression analysis, CP-Model:L=2.8219 0.7402x1(R=0.8799, SD=5.2149, N=18) and MPM-Model:L=1.073 0.426x1 0.170x2 (R=0.892, SD=5.2898, N=18) were derived, where x1 is the disease index at the pollination stage and x2 is the disease index at the late milk stage. |
| Keywords: | maize Curvularia lunata yield loss mo |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |