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茶园中合理地间作其他作物,有利于扶植天敌或抑制害虫。为评价松阳茶区几种常规间作对天敌和害虫个体数的影响效应,遂选乌牛早品种分别与吊瓜、杨梅和柑桔的间作茶园、安吉白茶品种与吊瓜间作茶园、乌牛早纯茶园,于2007年9月上旬-2008年12月下旬,每旬1次调查茶丛上、中、下层各类天敌和害虫的个体数。结果表明:(1)茶园天敌总个数以安吉白茶—吊瓜间作最多,依次是乌牛早与吊瓜、杨梅和柑橘间作茶园,天敌个数最少的是乌牛早纯茶园,5者之间差异达显著水平;(2)害虫总个数以安吉白茶—吊瓜间作茶园最多,依次是乌牛早与吊瓜间作茶园、乌牛早纯茶园、乌牛早与杨梅、柑橘间作茶园,5者之间差异也达显著水平;(3)茶丛上层总个体数以安吉白茶—吊瓜间作茶园最多,依次是乌牛早与吊瓜、杨梅和柑橘间作茶园、乌牛早纯茶园,差异达显著水平;(4)茶园总个体数以安吉白茶—吊瓜间作茶园最多,依次是乌牛早与吊瓜、杨梅间作茶园,乌牛早纯茶园,乌牛早与柑橘间作茶园,差异显著;(5)安吉白茶—吊瓜间作茶园益害比值最大,乌牛早纯茶园、乌牛早与柑橘间作茶园益害比值最小。分析认为:(1)间作拓展了空间,分散了昆虫和蜘蛛对于茶树的注意力,可以增加害虫或天敌的个数;(2)间作作物气味可调节昆虫行为,吊瓜与茶树间作吸引最多的害虫或天敌,柑橘与茶树间作致茶园中总个体数显著减少;(3)间作调节茶园益、害个体数量之比,合理间作可以作为一种调控害虫的手段。
Other reasonable crops in the tea plantation are conducive to supporting natural enemies or inhibiting pests. In order to evaluate the effect of several routine intercropping on natural enemies and insect pests in Songyang tea area, we selected Wanyao early cultivars as intercrop tea plantations, Angelica sinensis and citrus intercropping tea plantations, Early pure tea garden, in early September 2007 - late December 2008, every ten days to investigate the tea clumps, all kinds of natural enemies and pests individual number. The results showed as follows: (1) The total number of natural enemies in tea plantations was the largest among Anji white tea-slung melons, followed by Wuxiuzao and Diaogua, bayberry and citrus intercropping tea plantations. (2) The total number of pests was between tea plantations of Anji white tea and hanging melons, followed by the tea plantations of Wuniuzao and Dangguashu, the early pure tea plantations of Wuniu, the early tea plantations of Wanyuang and Yangmei and citrus, (3) The total number of individuals in the upper layer of tea bushes was the largest tea garden between Anji white tea and hanging melon, followed by Wuxiazao and Diaohua, bayberry and citrus intercropping tea plantations, Wuniu early pure tea garden, (4) The total number of tea plantations in Anji Bai Cha - Diaogua intercropping tea plantation, followed by Wulianzao and Diaogua, bayberry inter-tea plantations, Wuniuzao pure tea garden, Wuniuzai and citrus intercropping tea plantation, the difference Significant; (5) Anji white tea - hanging melon tea plantation for the benefit ratio of the largest, Wuniu early pure tea, Wuniuzai and citrus intercropping tea plantation harm ratio minimum. The analysis shows that: (1) The intercropping expands the space and disperses the attention of the insects and spiders to the tea tree, which can increase the number of pests or natural enemies; (2) The intercropping smell can regulate the insect behavior; Pests or natural enemies, the total number of individuals in the tea garden between citrus and tea decreased significantly; (3) Intercropping could regulate the ratio of tea plantation to the number of individuals, and reasonable intercropping could be used as a means to control pests.