CN103975801B - 一种防治八角象甲的方法 - Google Patents
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Abstract
本发明公开一种防治八角象甲的方法,属于林木病虫害防治技术领域,包括选择防治时期、配制杀虫粉剂和喷撒杀虫粉剂三个具体步骤,其有益效果是:通过触杀性农药溴氰菊酯杀虫作用,可以完全达到控制成虫交尾、产卵和毒杀树皮内卵粒、虫道内幼虫的效果,直接杀死八角象甲及其它危害八角树的害虫,起到一剂治多虫的作用,提高了八角病虫害防治的效果;同时通过白僵菌感染和传染害虫发病,间接杀死八角象甲及其它害虫,预防害虫再次发生,有效根除害虫的发生;而且具有高效、低毒、低残留的特点,对人畜安全,操作简便,节省劳动力,受山区气流影响不大,不用水,不受八角林地缺水的限制。
Description
技术领域
本发明涉及林木害虫防治方法,具体地说是一种防治八角象甲的方法,属于林木病虫害防治技术领域。
背景技术
八角(学名:Illiciumverum),是八角茴香科八角属的一种植物,是我国南亚热带地区的珍贵经济树种,其林产品有八角茴香和茴香油,是优良调味香料和医药原料,除供给国内需求外,还是我国的出口物资之一,其干燥果实是中国菜和东南亚地区烹饪的调味料之一。八角生长在湿润、温暖半阴环境中,主要分布于中国大陆南方,果实在秋冬季采摘,干燥后呈红棕色或黄棕色,气味芳香而甜,新鲜枝叶或成熟果实可制成茴香油,广泛用于香料和制药行业。
八角象甲是近几年广西八角产区出现的新害虫,主要危害八角中幼林,受其危害,每年春复,八角树新梢长出后很快萎蔫、干枯,使得当年八角枝叶生长受阻,开花、结果落空,造成八角落叶落果,造成大部分或完全失收,严重时整片八角林桔死,是近年来广西八角产区最大的杀手。
八角象甲属鞘翅目,象虫科,它的形态特征是:雌成虫体长7.9~9.1㎜,缘长3.4~4.8㎜;雄成虫体长6.3~7.8㎜,缘长2.8~3.8㎜,体黑褐色,体背上有成纵行的小颗粒状突起;卵乳白色,长1.4㎜,宽0.9㎜,两端钝圆,初产时乳白色剪淡黄色,半透明,后变为黄褐色;幼虫体长4.0~11.0㎜,初孵幼虫体长4.0~4.4㎜,身体浅乳白色,头浅黄褐色,口器黑褐色,多弯曲成“C”字形,蛹体长8~10㎜,浅乳黄色,近椭圆形。它的生活习性是:越冬后的成虫均于4月上旬至下旬上树交尾,交尾可在白天全天进行,下午比上午多见,而晚上少见;每次交尾历时0.5~3小时,交尾后1~2天,雌虫在当年萌发的嫩梢基部咬一条深2㎜,长约1.5㎜,宽约1.0㎜的刻槽,并随之产下卵一粒,第一代卵期2~3天,时间为4月中至5月上旬。孵化后的幼虫随即咬蛀进入木质部,沿主梢髓部向上取食,将中心全部蛀空,产卵后5~7天受害小枝的顶芽及嫩叶开始萎蔫,7~10天内完全干枯,幼虫咬食至嫩梢顶端后,可返回隧道下部化蛹;第一代幼虫期为4月中旬至6月中旬。第一代蛹期3~4天,6月中旬第一代成虫出现,7月下旬结束,第二代的卵期及幼虫期从6月下旬开始,幼虫期至8月下旬结束。
目前人们防治八角象甲的方法主要是用水雾喷剂或用烟雾剂喷杀,因八角产区多为山区地区,用水雾喷剂需消耗大量的水,往往山上缺水而用大量人力运输水,成本大,不易操作,用烟雾剂喷杀则受山区气流影响大,防治效果不稳定。
发明内容
发明目的:
本发明的目的是针对现有技术中存在的成本大、不易操作、防治效果不稳定的问题,提供一种防治八角象甲的方法,采用滑石粉为填充料,混入触杀性的溴氰菊酯和白僵菌活孢子粉制成杀虫粉剂,具有杀虫效果好、成本小、操作方便、适宜山区劳作的特点。
技术方案:本发明所述的一种防治八角象甲的方法,具体步骤如下:
(1)选择防治时期:选在每年3月下旬至4月中旬八角象甲上树、交尾、产卵、及幼虫初龄危害轻微的早期;
(2)配制杀虫溶液:将每100公斤滑石粉加入10%溴氰菊酯乳油800~1200毫升,再加入每克含活孢子量100亿的白僵菌孢子粉0.8~1.2公斤,充分搅拌均匀,制成杀虫粉剂;
(3)防治方法:配好杀虫粉剂后,采用喷粉机将杀虫粉剂均匀喷撒在受害的八角树和八角林地上,杀虫粉剂用量为每亩用溴氰菊酯乳油40~60毫升,滑石粉5公斤,白僵菌孢子粉0.04~0.06公斤。
有益效果:
本发明与现有技术相比,其有益效果是:
(1)通过触杀性农药溴氰菊酯杀虫作用,可以完全达到控制成虫交尾、产卵和毒杀树皮内卵粒、虫道内幼虫的效果,直接杀死八角象甲及其它危害八角树的害虫,起到一剂治多虫的作用,提高了八角病虫害防治的效果;
(2)通过白僵菌感染和传染害虫发病,间接杀死八角象甲及其它害虫,预防害虫再次发生,有效根除害虫的发生;
(3)本杀虫剂具有高效、低毒、低残留的特点,对人畜安全;
(4)操作简便,节省劳动力,受山区气流影响不大,不用水,不受八角林地缺水的限制。
具体实施方式
下面结合具体实施事例对本发明技术方案进行详细说明,但是本发明的保护范围不局限于所术实施例。
实施地点:广西壮族自治区百色市那坡县规林八角场八角林地,防治面积500亩。
防治步骤:
(1)防治时期选择:2013年4月8日~10日;
(2)配制杀虫溶液:先将10000毫升溴氰菊酯乳油加入1000公斤滑石粉填充料中搅拌,现时加入10公斤的白僵菌孢子粉,充分搅拌均匀,制成杀虫粉剂;
(3)防治方法:用喷粉机直接将配好的杀虫剂直接喷撒在八角树和八角林地上,可以看到八角树的的叶甲害虫纷纷落地死亡。
事后调查,这种方法防治八角象甲效果可达90%以上。
Claims (4)
1.一种防治八角象甲的方法,其特征在于包括以下具体步骤:(1)选择防治时期:选在每年3月下旬至4月中旬八角象甲上树、交尾、产卵、及幼虫初龄危害轻微的早期;(2)配制杀虫溶液:将每100公斤滑石粉加入溴氰菊酯乳油800~1200毫升,再加入白僵菌孢子粉0.8~1.2公斤,充分搅拌均匀,制成杀虫粉剂;(3)喷撒杀虫粉剂:配好杀虫粉剂后,采用喷粉机将杀虫粉剂均匀喷撒在受害的八角树和八角林地上。
2.根据权利要求1所述一种防治八角象甲的方法,其特征在于所述的步骤(2)的溴氰菊酯乳油的含量为10%。
3.根据权利要求1所述一种防治八角象甲的方法,其特征在于所述的步骤(2)的白僵菌孢子粉每克含活孢子量为100亿。
4.根据权利要求2或3所述一种防治八角象甲的方法,其特征在于所述的杀虫粉剂用量为每亩用溴氰菊酯乳油40~60毫升,滑石粉5公斤,白僵菌孢子粉0.04~0.06公斤。
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