越冬代二化螟的扑灯节律

doi:10.16178/j.issn.0528-9017.20230751

摘要/Abstract

摘要：

二化螟是水稻上的主要害虫,为明确越冬代二化螟的扑灯节律,采用4台智能测报灯(分别安装在崇福镇、石门镇、乌镇镇和屠甸镇4个测报站点),在4月1日至5月31日把每晚分成19:00—20:00、20:00—21:00、21:00—22:00、22:00—23:00、23:00—0:00、0:00—1:00、1:00—2:00、2:00—3:00、3:00—4:00、4:00—5:00和5:00—6:00等11个时间点,调查每个时间点的二化螟数量来看越冬代二化螟的扑灯节律。越冬代不同时间段蛾峰按照时间先后顺序出现的第1、2、3和4峰差异较大。第1峰仅在崇福站点出现明显峰值,二化螟的扑灯高峰在20:00—21:00,诱蛾量占第1峰总数的19.48%;第2峰为越冬代诱蛾量最大的蛾峰,第2峰二化螟的扑灯高峰也在20:00—21:00,崇福、石门和屠甸3个站点的诱蛾量占第2峰总数分别为19.67%、20.42%和19.31%;第3峰和第4峰在崇福、石门和屠甸3个站点扑灯高峰分别在22:00—23:00、23:00—0:00、1:00—2:00和1:00—3:00、1:00—2:00、21:00—22:00。乌镇站点没有监测到明显蛾峰。越冬代二化螟总体扑灯最高峰在20:00—21:00,上半夜扑灯数量接近60%。越冬代二化螟第1峰和第2峰的扑灯节律相似,与第3峰和第4峰差异较大。不同越冬场所的二化螟扑灯节律不同。文章明确了越冬代二化螟的扑灯节律,可为当地开展二化螟的绿色防控和生态治理提供理论依据。

关键词: 二化螟, 灯诱, 扑灯节律, 越冬

Abstract:

Chilo suppressalis is a major pest in rice. In order to determine the rhythm of the overwintering generation of Chilo suppressalis to the search light traps, we divided the night into 11 time points (19:00-20:00、20:00-21:00、21:00-22:00、22:00-23:00、23:00-0:00、0:00-1:00、1:00-2:00、2:00-3:00、3:00-4:00、4:00-5:00和5:00-6:00) from April 1 to May 31, and used four intelligent light to investigate the number of Chilo suppressalis at each time point respectively, at Chongfu Town, Shimen Town, Wuzhen town and Tudian Town, respectively. Four chronological peaks of the moth populations in different periods of the overwintering generation differed greatly. The first peak obviously occurred only at Chongfu during 20:00-21:00, with the trapped number accounting for 19.48% of the first peak. The second peak attracted the largest amount of moths in overwintering generation, reaching the climax during 20:00-21:00 that took up 19.67%, 20.42% and 19.31% of the second peak respectively in Chongfu, Shimen and Tudian town. According to the third and forth peak, it got to the climax during 22:00-23:00, 23:00-0:00, 1:00-2:00 and 1:00-3:00, 1:00-2:00, 21:00-22:00, respectively in Chongfu, Shimen and Tudian. No obvious moth peaks was detected at the Wuzhen. On the whole, the peak amount of the trapped moths appeared during 20:00-21:00, and the trapped amount in the first half of the night was close to 60%. The first peak was similar to the second one in terms of the rhythm of response to search light trap of the moths in overwintering generation, meanwhile, the rhythms of the two peaks above differed greatly from those of the third and the forth one. We found that the rhythm of Chilo suppressalis in different overwintering places is different, which can provide a theoretical basis for the local rice green control and ecological management of the moths.

Key words: Chilo suppressalis, search light trap, rhythm to the search light trap, overwintering

中图分类号:

S435

姚张良, 沈跃军, 徐伟东, 陆强. 越冬代二化螟的扑灯节律[J]. 浙江农业科学, 2024, 65(11): 2636-2640.

YAO Zhangliang, SHEN Yuejun, XU Weidong, LU Qiang. Rhythm of Chilo suppressalis for overwintering generation to the search light traps[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(11): 2636-2640.

图/表 4

表1 4个智能测报点的基本情况

Table 1 Basic information of the four intelligent monitoring and reporting points

测报站点	地理坐标	始见蛾期 (月-日)	诱蛾量/ 头
崇福	120°24'7″E,30°33'52″N	04-06	825
石门	120°25'59″E,30°40'53″N	04-06	340
乌镇	120°31'44″E,30°42'43″N	04-07	139
屠甸	120°36'23″E,30°33'39″N	04-07	430

图1 越冬代二化螟的灯诱虫量

Fig.1 The amount of overwintering Chilo suppressalis under search light traps

图2 3个测报点二化螟逐时灯诱虫量占比

Fig.2 Proportion of hourly amount of Chilo suppressalis under the search light traps in the three monitoring and reporting points

图3 越冬代和第2峰二化螟逐时灯诱虫量占比同系列柱子上无相同小写字母表示第2峰不同时刻差异达显著水平(P<0.05),无相同大写字母表示越冬代不同时刻差异显著(P<0.05)。

Fig.3 Proportion of hourly amount of Chilo suppressalis under the search light traps in the overwintering generation and the second peak

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