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本文以陕西关中棉区发生普遍,为害严重的绿盲爆(Lreu。l。ocr。m Mever-DQr)、首稻育馆(A人如加c。r订U。。。b拙。G。ez一、三点盲蝽(A.fasiaticollis Reuter)和中黑盲蝽(A.s。。tuturalus Jak.)四种盲蝽为对象,进行了数量变动的研究与分析。 文中依据生态特性的研究结果,结合8年的田间观察资料,对棉田内四种盲蝽混合种群与单种种群的消长曲线分别进行了分析与比较,根据分析结果,文中采用了盲蝽混合种群作为分析的对象,并提出棉田内盲蝽混合种群的消长曲线是受蕾铃期间降水量与降水期的影响,根据降水量与降水期的不同,其曲线变动可分为四个波动型,即前峰型、中峰型、后峰型与双峰型。由于峰型不同,即表示着该年的旱涝分布与棉株受害程度与阶段的不同,前峰型属前涝后旱型,亦即蕾期为害型:后峰型属前旱后涝型,亦即铃期为害型;双峰型属涝年型,亦即蕾铃两期为害型;而中峰型则属旱年型,亦即蕾铃两期受害均轻型。 文中依据棉株不同生长阶段中影响盲蝽种群数量变动的主导作用因素的分析结果,提出分析棉田盲蝽种群的变动应分为蕾期与铃期两阶段,由于棉株生长阶段不同,在这两阶段中影响盲蝽的主导作用因素亦不同,蕾期的虫口增长是受早春虫口基数与6月降水量两因素联合作用的结果,而铃期的虫口增长则系受温湿度组
This article takes the Guanzhong cotton area in Shaanxi Province as a widespread, serious defacement green blind burst (Lreu.l.ocr.m Mever-DQr), First Rice House (A person if added c.r set U ... b. ez, A. fasiaticollis Reuter and Asterutis spp., were studied in this paper.According to the study of ecological characteristics, Combined with 8 years of field observation data, the growth and decline curves of four species of Lygus inhabiting cotton fields were compared with those of single species. Based on the analysis results, the mixed population of Lygus was used as the analysis object, The growth and decline curve of the mixed population of Lysimachiae is influenced by the precipitation and precipitation period during the period of boll bolting. According to the difference between precipitation and precipitation period, the curve variation can be divided into four fluctuation types, namely, the former peak type, the middle peak type, After the peak and bimodal type.Because of the different peak types, which means that the distribution of the year drought and cotton plant damage degree and stage is different, the former peak type after the floods before dry type, also known as the bud stage damage: after Peak type is drought waterlogging before, that is, the bell-type; bimodal type is waterlogging, that is, While the mid-peak type belongs to the dry type, that is, the two strains of Lei-ling are both light-affected.The article based on the analysis of the leading factors affecting the population variation of Lygus stink bug in different growth stages of cotton plants, The variation of population should be divided into two stages: bud stage and boll stage. Due to the different growth stage of cotton plant, the predominant influencing factors of Lygus are also different in these two stages. The growth of insects in bud stage is influenced by the population of early spring and the precipitation in June The amount of two factors combined results, but the bell phase of growth is affected by temperature and humidity group