盛夏西湖龙井茶园色板诱杀的昆虫类群的组成及其趋色性差异
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国家重点研究发展计划项目(2018YFC1604402);浙江省自然科学基金项目(LY17C140002);浙江省基础公益研究计划项目 (LGN18C160006)


Difference in phototaxis of insect groups and their community composition trapped on sticky colored boards in Xihu Longjing tea plantations in the midsummer
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    摘要:

    探讨减免施药,代之以诱虫板有效诱杀西湖龙井茶园重要害虫,并避免误伤天敌。遂选一大片西湖龙井茶园,于茶园昆虫类群繁盛的7月下旬,连续72 h用芽绿和素馨黄等12种诱虫板诱捕昆虫,解析被捕昆虫的类群组成及其趋色性差异。结果:(1)捕获253870头昆虫,隶属于147种57科8目,半翅目、膜翅目和双翅目是优势类群,依次占总个体数的98.8%、0.6%和0.5%;害虫、天敌和中性昆虫种数分别为61、54和32;(2)黑刺粉虱和茶小绿叶蝉占总个体数94.1%和2.0%;(3)平均每块芽绿、素馨黄色板诱捕茶小绿叶蝉和黑刺粉虱分别是86头和10410头;(4)平均每块墨绿、桃红、天蓝、湖蓝、紫色和纯白色板诱杀的个体数< 400、诱杀的种数≤10、天敌/害虫个体数之比在1/10和1/40之间,被捕昆虫的群落多样性指数H'>1.0;平均每块大红、果绿色板诱杀的个体数 > 450且 < 800、诱杀的种数 > 9且 < 10,天敌/害虫个体数之比值介于1/85和1/45间,0.5 < H' < 0.7;平均每块桔黄、土黄、芽绿和素馨黄色板诱杀的个体数>3700头、诱捕的种数≥10、天敌/害虫个体数之比<1/100,多样性指数H'<0.5;(5)芽绿、素馨黄、土黄和桔黄诱杀害虫个体数极显著大于其它8种色板诱杀的害虫个体数。认为:在西湖龙井茶园盛夏3日就可诱杀极多昆虫,既说明茶园昆虫种类多且个体数大,又揭示茶园优势种害虫茶小绿叶蝉和黑刺粉虱具有显著趋黄绿色习性,可分别使用芽绿、素馨黄色板诱杀之,还能尽量减少天敌和中性昆虫被误杀,部分地替代化学防治。

    Abstract:

    In order to reduce spraying insecticides and protect natural enemies, an environmentally sound alternative approach using sticky colored boards for trapping important insect pests in tea plantations was being investigated. In current study, a large tea plantation in the Xihulongjing Tea original production place was chosen during the pest abundant midsummer, in which 12 colors of sticky boards including bud green and jasmine yellow were set up to trap various insects in successional 72 h in late July. Both community composition of trapped insect groups and their difference in phototaxis were analyzed. Our field trapping results are listed below. ① In total of 253870 individuals of 147 insect species, belonging to 57 families of 8 orders, were captured. Among which, Hemiptera, Hymenoptera and Diptera were the dominant groups, accounting for 98.8%, 0.6% and 0.5% of the total individuals captured, respectively. The captured insect community composition included 61 species of pests, 54 species of beneficial insects and 32 species of neutral insects. ② The citrus spiny whitefly and the tea green leafhopper were the two most dominant pest species, accounting for 94.1% and 2.0% of the total captured insect individuals, respectively. ③ On average, 10410 citrus spiny whiteflies and 86 tea green leafhoppers were caught per jasmine yellow (or bud green) board, respectively. ④ The average numbers of insect individuals caught on the dark green, peach red, sky blue, lake blue, purple, and pure white sticky boards were all less than 400, with their average numbers of insect species being less than or equal to 10, their beneficial/pest ratios (of captured individuals) being between 1/10 and 1/40, and their diversity indices H' of captured insect groups being over 1.0. The average numbers of individuals caught on bright red and apple green boards ranged from 450 to 800 with their average numbers of insect species being 9-10, their beneficial/pest ratios being 1/85 to 1/45, and H' being 0.5-0.7. On the orange, earth yellow, bud green and jasmine yellow sticky boards, the average numbers of insect individuals captured were >3700, and their average numbers of insect species captured were greater than or equal to 10, their beneficial/pest ratios were <1/100, and their diversity indices H' were <0.5. ⑤ The orange, earth yellow, jasmine yellow, and bud green sticky boards caught significantly more pest individuals than did the other eight colored boards. In the current study, a large number of insects were captured on the sticky colored boards in the Xihulongjing tea plantation during only three days in the midsummer, indicating the existence of a diverse insect community with abundant individuals that showed a significant positive phototaxis to yellow and green. The bud green and jasmine yellow sticky boards might be used to attract and kill the tea green leafhoppers and the citrus spiny whiteflies, and could partially replace insecticides with little negative impacts on natural enemies and neutral insects.

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王彦苏,韩善捷,韩宝瑜.盛夏西湖龙井茶园色板诱杀的昆虫类群的组成及其趋色性差异.生态学报,2020,40(19):7093~7103

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