| 水稻覆膜旱作对病虫草害发生程度的影响 |
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| 引用本文： | 祝增荣,吴良欢,吴国强,程家安.水稻覆膜旱作对病虫草害发生程度的影响[J].植物保护学报,2000,27(4):295-301. |
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| 作者姓名： | 祝增荣 吴良欢 吴国强 程家安 |
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| 作者单位： | 浙江大学,杭州 |
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| 基金项目： | 国家自然科学基金项目(39970146)，浙江省科委重点项目(981102273)，IPM Network资助 |
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| 摘 要： | 就覆膜旱作栽培方式对早稻和单季稻病虫草害、天敌、腐食者等的丰盛度与为害程度影响作了研究。结果表明，稻田覆膜旱作可显著降低早稻纹枯病的发生程度，与常规淹水对照稻田相比，覆盖旱作稻田纵卷叶螟为害率、灰飞虱和蚜虫类虫密度及杂草发生程度无显著差异，但螟虫为害加剧，施肥量仅对照田一半的覆膜田螟虫为害株百分率比对照田提高２．４％～８．５％。水稻覆膜旱作栽培方式和种植密度高低是影响寄生蜂和蜘蛛类密度的主要因子。
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| 关 键 词： | 水稻 地膜覆盖 病虫草害 天敌 腐食者 覆膜旱作 |
THE EFFECTS OF FILMED GROUND AND DRY GROWING CONDITIONS ON THE OCCURRENCE OF RICE PESTS, NATURAL ENEMIES AND SAPROPHAGOUS INSECTS |
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| Zhu Zengrong,Wu Lianghuan,Wu Guoqiang and Cheng Jia''an.THE EFFECTS OF FILMED GROUND AND DRY GROWING CONDITIONS ON THE OCCURRENCE OF RICE PESTS, NATURAL ENEMIES AND SAPROPHAGOUS INSECTS[J].Acta Phytophylacica Sinica,2000,27(4):295-301. |
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| Authors: | Zhu Zengrong Wu Lianghuan Wu Guoqiang and Cheng Jia'an |
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| Institution: | Zhejiang University, Hangzhou 310029,Zhejiang University, Hangzhou 310029,Zhejiang University, Hangzhou 310029 and Zhejiang University, Hangzhou 310029 |
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| Abstract: | The effects of filmed ground and dry growing (FD treatment) conditions on the occur-rence/infectiousness of pests (diseases, insect pests and weeds), and richness of natural enemies and saprophagous insects on early rice and singlecrop rice were investigated. The results showed that, in comparison with the water growing rice as the check, the occurrence of rice sheath and culm blight Hypochnus sasakii Shirai disease in early rice field decreased significantly, and the damage rate of rice leafroller Cnaphalocrocis medinalis Guenee and the densities of small brown planthopper Laodelphax striatellus (Fallen), aphids and weeds were similar, whilst the damage of rice stem borer Chilo suppressalis Walker increased significantly, even half fertilizer amount of the check was applied in FD field, the damaged plant rate by C. suppressalis had 2.4% - 8.5% increased. The main determinant factors of the densities of parasitoids and spiders were FD cultivation and the density of rice plants. The incidence of sheath and culm blight disease of single crop rice in FD cultivation treatment was much more lower than the check, but the differences of densities of sucking insects such as rice leafroller, planthoppers, aphids and leafhoppers, etc. as well as the damage rate of stem borer between FD treatment and the check were negligible.
In FD cultivation field, the number of newborn broad leaf dicotyledons increased, and that of thin leaf dicotyledons decreased, and the cover degree of bristly weeds was similar, in comparison with the check. Generally, the FD treatment has decreased the densities of natural enemies and saprophagous insects. |
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| Keywords: | rice filmed ground pest organism natural enemy saprophage |
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