氮肥对棉田主要害虫种群密度及棉花产量的影响

应用生态学报 ›› 2003, Vol. ›› Issue (10): 1735-1738.

氮肥对棉田主要害虫种群密度及棉花产量的影响

戈峰, 刘向辉, 李泓达, 门兴元, 苏建伟

中国科学院动物研究所农业虫鼠害综合治理国家重点实验室, 北京 100080

收稿日期:2001-10-29 修回日期:2002-12-23
通讯作者: 戈峰,男,1963年生,博士,研究员,主要从事昆虫生态学、昆虫与植物关系和害虫生态调控研究,已发表论文80余篇.E-mail:gef@panda.ioz.ac.cn.
基金资助:
中国科学院知识创新工程重要方向项目(KSCX2-01-02和KSCX-SW-103);国家自然科学基金(39970137);国家重点基础研究发展规划资助项目(G2000016209)

Effect of nitrogen fertilizer on pest population and cotton production

GE Feng, LIU Xianghui, LI Hongda, MEN Xingyuan, SU Jianwei

State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China

Received:2001-10-29 Revised:2002-12-23

摘要/Abstract

摘要： 通过2年的田间研究,分析了3种不同施氮水平对棉花主要害虫棉铃虫、棉蚜种群动态、棉花蕾铃脱落及棉花产量的影响.结果表明,增施氮肥的棉田棉铃虫和棉蚜数量比对照田要高,但它们之间的差异没有达到显著的水平.不同年份对棉铃虫种群密度有显著影响,但对棉蚜种群没有显著影响.蕾花期施肥可减轻棉铃虫为害造成的花蕾脱落和自然脱落,增加有效铃数和产量,但增加量没有达到显著水平.

关键词: 施氮肥, 棉铃虫, 棉蚜, 棉花产量

Abstract: Field experiments were conducted from 1999 to 2000 to assess the effect of nitrogen fertilization levels (0, 225 and 450 kg穐m^-2) on the population dynamics of cotton bollworm (Helicoverpa armigera) and cotton aphid (Aphid gossypii), and on the numbers of cotton buds and bolls in North China.The population densities of cotton bollworm and cotton aphid increased with increasing nitrogen fertilization during1999 to 2000, but the differences between treatments were not significan(P>0.05).There were significant differences of cotton boll-worm populations and no significant differences of cotton aphid populations between years.Nitrogen fertilization at flower-bud stage decreased the loss of cotton buds and flowers and increased the number of effective bolls and cotton yield, but the decrement and increment did not get to significant level (P< 0.05).No obvious correlations of nitrogen levels with main pest abundance and cotton production were observed.

Key words: Nitrogen fertilizer, Helicoverpa armigera, Aphid gossypii, Cotton yield

中图分类号:

S435.62

戈峰, 刘向辉, 李泓达, 门兴元, 苏建伟. 氮肥对棉田主要害虫种群密度及棉花产量的影响[J]. 应用生态学报, 2003, (10): 1735-1738.

GE Feng, LIU Xianghui, LI Hongda, MEN Xingyuan, SU Jianwei . Effect of nitrogen fertilizer on pest population and cotton production[J]. Chinese Journal of Applied Ecology, 2003, (10): 1735-1738.

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