CN113016528A - 一种虾田稻虫害综合绿色防控方法 - Google Patents
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Abstract
一种虾田稻虫害综合绿色防控方法,在有养殖虾的水稻田埂两边种植香梗草间套种显花植物、田间释放害虫天敌,利用田埂上香梗草诱集害虫集中产卵,显花植物为天敌提供栖息场所,同时田间释放能寄生在害虫卵里的天敌,达到破坏害虫卵正常发育,再配套使用抗病品种、深水灭蛹、物理诱杀、适时考田等技术措施,达到减少农药的使用,改善水体养殖环境,提高害虫防控效果。
Description
技术领域
本发明涉及虾稻共生种植领域,具体涉及一种虾田稻虫害综合绿色防控方法。
背景技术
近年来,随着稻田虾快速的发展的同时,对虾、稻米的产量的提升有高的要求。为降低虾田水稻害虫发生程度,必要时还进行施药防治水稻害虫,施农药后,对稻田虾养殖环境可能造成一定的破坏、污染,同时影响了稻田虾、稻米的品质质量,因此应用物理防治、生物防治等绿色防控技术方法,降低水稻害虫发生危害。
目前,减轻害虫发生危害主要通过喷施对虾安全的药剂、灯光诱杀成虫、性诱诱杀成虫等技术进行控制。但是,部分害虫趋光性不强、性诱比较单一,对虾田水稻上的害虫达不到控制作用;在水稻种植后期虫害重发时,使用安全生物药剂进行防治,防治效果不理想,而且药剂可能会对虾的养殖水体会造成一定污染。
发明内容
本发明所要克服的是虾田水稻虫害防治方法单一,对虾稻共存生态影响较大的问题,目的是提供一种虾田稻虫害综合绿色防控方法。
本发明所要解决的技术问题采用以下的技术方案来实现:
一种虾田稻虫害综合绿色防控方法,步骤如下:
(1)种子处理:选取颗粒饱满的种子,将种子放入种子消毒药剂中浸种 16-24h:将消毒后的种子放入清水中浸泡,催芽;
(2)稻田处理:根据稻田类型和田块形状开挖虾沟,虾沟呈“U”型,虾沟面积不超过稻田面积的10%,虾沟宽度3-4m,深度1.2-1.5m;催芽后的秧苗移栽在虾沟之外的区域;
(3)种植诱集植物:在田埂边缘种植香根草,以分株的方式来移栽种植,香根草植株间套种显花植物,并在田间释放害虫天敌;
(4)放置性诱捕器:稻虾田每亩设置1个性诱捕器,诱捕器放置高度为诱捕器底部高于地面50-80cm,每个性诱捕器间距25m左右;
(5)放置杀虫灯:田埂上每30亩安装一盏太阳能杀虫灯,杀虫灯吊挂在稻田埂的铁管柱上。
进一步的,显花植物为向日葵、芝麻、波斯菊一种过多种。
进一步的,香根草在田埂上种植两行,丛间距3-5m、行间距50-60m。
进一步的,杀虫灯吊挂高度为杀虫灯底部离地面1.2-1.5m,杀虫灯之间距离为100-150m,呈棋盘式分布。
进一步的,田埂高于田面1-1.2m。
本发明的有益效果是:
本发明结构简单,在有养殖虾的水稻田埂两边种植香梗草间套种显花植物、田间释放害虫天敌,利用田埂上香梗草诱集害虫集中产卵、显花植物为天敌提供栖息场所,同时田间释放能寄生在害虫卵里的天敌,达到破坏害虫卵正常发育,再配套使用抗病品种、深水灭蛹、物理诱杀、适时考田、生物药剂等技术措施,达到减少农药的使用,改善水体养殖环境,提高害虫防控效果。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
一种虾田稻虫害综合绿色防控方法,步骤如下:
(1)种子处理:选取颗粒饱满的种子,将种子放入种子消毒药剂中浸种 16-24h:将消毒后的种子放入清水中浸泡,催芽;
(2)稻田处理:根据稻田类型和田块形状开挖虾沟,虾沟呈“U”型,虾沟面积不超过稻田面积的10%,虾沟宽度3-4m,深度1.2-1.5m;催芽后的秧苗移栽在虾沟之外的区域,田埂应高于田面1-1.2m;
(3)种植诱集植物:在田埂边缘种植香根草,以分株的方式来移栽种植,香根草植株间套种显花植物,并在田间释放害虫天敌;
(4)放置性诱捕器:稻虾田每亩设置1个性诱捕器,诱捕器放置高度为诱捕器底部高于地面50-80cm,每个性诱捕器间距25m左右;
(5)放置杀虫灯:田埂上每30亩安装一盏太阳能杀虫灯,杀虫灯吊挂在稻田埂的铁管柱上。
水稻优选抗病品种例如黄华占;稻虾田块进行翻耕深水灭蛹;
利用水稻二化螟有明显偏爱在香根草上产卵的特性,在香根草上的产卵密度是水稻上的10倍以上,利用香根草作为诱集植物来诱集诱杀水稻二化螟。香根草一般于3月底至4月初在稻虾田田埂边缘种植,以分株的方式来移栽种植,田埂种植两行,丛间距3-5m、行间距50-60m,且第一年种植活棵后,次年及以后都不再需重新种植;再结合当地每年二化螟低龄幼虫盛发初期、调查与观测香根草的二化螟产卵量、二化螟卵块孵化进度,抓住二化螟在香根草上卵孵盛期进行集中诱杀。集中诱杀有利于降低害虫的群体发展,减轻虾田水稻上二化螟的危害,使二化螟达不到防治指标则不必施药,降低二化螟防治成本,减少环境污染和提高稻虾米品质。
利用在稻虾田埂边香根草植株间套种向日葵、芝麻、波斯菊等显花植物,用来吸引、聚集捕食性天敌和寄生性天敌,为其提供生存、繁殖环境和越冬场所,提高天敌交配繁殖率,增加局部环境内的天敌数量;同时还能为天敌提供充足的非捕猎性食物,降低天敌搜寻食物所需的时间、能量,让天敌能拥有的时间和能力去找寻水稻二化螟卵块,同时还在虾田水稻上释放寄生性天敌赤眼蜂,提高二化螟卵块被寄生率,降低二化螟卵孵化率,减少下代二化螟虫口基数,达到天敌控制螟虫能力,使虾田水稻上二化螟发生数量低于防治指标,减少农业污染、农药的使用,同时还可以恢复稻虾田生态系统的生物多样性,增加稻虾田抗虫害的能力。
利用水稻二化螟成虫较强的趋光性、趋波性等这一特性,通过把光的波长、波段、波的频率设定在特定值范围之内,近距离用光、远距离用波,加以诱到的水稻二化螟本身产生的性信息引诱成虫扑灯,灯外配以频振式高压电网触杀二化螟;稻虾田田埂上每30亩安装一盏太阳能频振式杀虫灯,杀虫灯吊挂在稻田埂的铁管柱上,吊挂高度为杀虫灯底部离地面1.2-1.5m,杀虫灯之间距离为 100-150m,呈棋盘式分布。一般在春季4月下旬开始使用工作,于秋季10月上中旬结束,开灯时间视季节而定,采用时控开关进行控制,一般傍晚6点开灯,次日零时关灯,夏季可以适当推迟开关灯(晚上21点至次日凌晨4点)。杀虫灯诱杀二化螟、稻纵卷叶螟、稻飞虱等水稻害虫,降低稻虾田二化螟等虫口基数,减少农药使用,保护稻虾田生态环境。
性诱设备诱杀二化螟成虫。利用二化螟成虫性发育成熟后,会进行求偶交配。利用现代技术,制成对同种异性个体有特殊吸引力的性信息素诱芯(即人工合成昆虫雌虫分泌到体外以引诱雄虫前去交配的微量化学信息物质),结合诱捕器配套使用,在田间释放,诱集和诱捕雄性二化螟成虫。从4月初起,从二化螟越冬代成虫羽化始期开始,每亩稻虾田设置1个性诱捕器,诱捕器放置高度为诱捕器底部高于地面50-80cm,每个性诱捕器间距25m左右,采用外密内疏的布局、连片使用方法;从而降低稻虾田二化螟落卵量和孵化率,减少二化螟虫口密度,把二化螟控制在防治指标以下。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (5)
1.一种虾田稻虫害综合绿色防控方法,其特征在于,步骤如下:
(1)种子处理:选取颗粒饱满的种子,将种子放入种子消毒药剂中浸种16-24h:将消毒后的种子放入清水中浸泡,催芽;
(2)稻田处理:根据稻田类型和田块形状开挖虾沟,虾沟呈“U”型,虾沟面积不超过稻田面积的10%,虾沟宽度3-4m,深度1.2-1.5m;催芽后的秧苗移栽在虾沟之外的区域,稻田田埂应高于田面1-1.2m;
(3)种植诱集植物:在田埂边缘种植香根草,以分株的方式来移栽种植,香根草植株间套种显花植物,并在田间释放害虫天敌;
(4)放置性诱捕器:稻虾田每亩设置1个性诱捕器,诱捕器放置高度为诱捕器底部高于地面50-80cm,每个性诱捕器间距25m左右;
(5)放置杀虫灯:田埂上每30亩安装一盏太阳能杀虫灯,杀虫灯吊挂在稻田埂的铁管柱上。
2.根据权利要求1所述的一种虾田稻虫害综合绿色防控方法,其特征在于,显花植物为向日葵、芝麻、波斯菊一种或多种。
3.根据权利要求1所述的一种虾田稻虫害综合绿色防控方法,其特征在于,香根草在田埂上种植两行,丛间距3-5m、行间距50-60m。
4.根据权利要求1所述的一种虾田稻虫害综合绿色防控方法,其特征在于,杀虫灯吊挂高度为杀虫灯底部离地面1.2-1.5m,杀虫灯之间距离为100-150m,呈棋盘式分布。
5.根据权利要求1所述的一种虾田稻虫害综合绿色防控方法,其特征在于,田埂高于田面1-1.2m。
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