| 三化螟经济阈值的研究 |
| |
| 引用本文： | 王健,吴中孚. 三化螟经济阈值的研究[J]. 植物保护学报, 1990, 17(1): 23-27 |
| |
| 作者姓名： | 王健 吴中孚 |
| |
| 作者单位： | 福建农学院植物保护系，福建农学院植物保护系 |
| |
| 摘 要： | 本文根据三化螟虫量与产量损失关系的测定、天敌因素的作用、化学防治的经济和生态效益、防治费用及稻谷市场价格变动情况等因素,制定出不同产量水平条件下的三化螟经济允许损失水平。并制定出产量水平在每公顷6000公斤的条件下,三化螟的经济阈值:早稻孕穗末期、始穗期和抽穗期分别为每公顷1260,1470和1710块卵块;晚稻分蘗期、孕穗末期、始穗期和抽穗期分别为每公顷1335、1380、1620和1890块卵块。
|
| 关 键 词： | 三化螟 经济阈值 |
STUDIES ON THE ECONOMIC THRESHOLD OF PADDY STEM BORER |
| |
| Wang Jian and Wu Zhongfu. STUDIES ON THE ECONOMIC THRESHOLD OF PADDY STEM BORER[J]. Acta Phytophylacica Sinica, 1990, 17(1): 23-27 |
| |
| Authors: | Wang Jian and Wu Zhongfu |
| |
| Affiliation: | Department of Plant Protection, Fujian Agricultural College and Department of Plant Protection, Fujian Agricultural College |
| |
| Abstract: | In 1984-1986,the economic threshold of paddy stem borer Tryporyza incertulas Walker in different soil fertility conditions were developed in Fuzhou,Fujian Province,based on the relation between the egg number and yield loss,the action of natural enemies,the economic and ecological effect of pesticides,and the cost dynamics of product and control.The economic thresholds in booting-earing stages of early and late season rice at certain grain output level were then be determined. |
| |
| Keywords: | Tryporyza incertulas economic threshold |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《植物保护学报》浏览原始摘要信息 |
|
点击此处可从《植物保护学报》下载全文 |
|
