Abstract:

【Objective】 In the new situation of the forage Lygus pratensis (linnaeus) acting again as the major cotton pest in the cotton areas of southern Xinjiang, clarifying the host plant species of forage bugs and seasonal succession host feeding in the cotton area of southern Xinjiang can provide a theoretical basis for the prevention and control it.【Methods】 The host plant species of L. pratensis were investigated in the main cotton planting ecological areas in southern Xinjiang from 2015 to 2017.【Results】 The host plants of L. pratensis belonged to 26 families, 90 genera and 118 species, mainly concentrating in Leguminosae, Compositae, Chenopodiaceae, Brassicaceae, etc. Among them, 50 species were cultivated crops (including horticultural crops), 54 species were weeds, 8 species were landscape flowers and 6 species were trees. The annual life cycle of L. pratensis developed according to the species of host plants in different seasons.【Conclusion】 There are a wide range of host plants of L. pratensis in southern Xinjiang, and feeding hosts showed obvious seasonal succession, which provides a good condition for its seasonal migration. Comparison and analysis with reports from the 1950s to the 1960s show that over time, the introduction of cultivated crops, fruit trees, and landscape flowers and so on is the main reason of L. pratensis.

Key words: Lygus pratensis; host plants species; host feeding; seasonal succession

摘要：

【目的】研究新疆南部棉区牧草盲蝽的寄主植物种类及其寄主取食季节性演替规律,为牧草盲蝽的防治提供理论基础。【方法】2015~2017年在新疆南部主要植棉绿洲生态区,采取普查方法调查牧草盲蝽的寄主植物种类。【结果】新疆南部棉区牧草盲蝽寄主植物共26科90属118种,主要集中于豆科、菊科、苋科、十字花科等;其中栽培作物(包括园艺作物)50种,杂草54种,景观花卉8种,树木6种;并依据不同季节取食寄主植物的种类制定了牧草盲蝽的年生活史循环图。【结论】新疆南部棉区牧草盲蝽寄主植物范围广泛,且取食呈现明显的季节性演替规律,为其季节性迁移提供良好的条件;随着时间的变迁,引进栽培作物、果树、景观花卉等是牧草盲蝽寄主植物数量增加的主要原因。

关键词: 牧草盲蝽, 寄主种类, 寄主取食, 季节性演替规律