Shi Guo-Qing, Lin Chao-Wen, Liu Zhang-Yong, Li Chuan-Ren, Chen Yi-Bing, Ma Tao, Wang Qi-Feng, Liu Zhi-Long, Cai Qing-Nian
College of Agronomy & Biotechnology, China Agricultural University, Beijing 100193, China.
Ying Yong Sheng Tai Xue Bao. 2011 Dec;22(12):3265-71.
This paper studied the effects of planting different kinds of plant hedgerow (Amorpha fruticosa, Vetiveria zizanioides, Eulaliopsis binata, and Medicago sativa) on the population dynamics of wheat aphid and its natural enemies in the hillside wheat fields in Ziyang City of Sichuan Province, Southwest China. On the 20 degrees hillside, A. fruticosa hedgerow inhibited the occurrence of wheat aphid in the wheat field significantly, and the parasitoid densities were equal to or significantly lower than those in the wheat field with V. zizanioides hedgerow. On the 12 degrees hillside, M. sativa and E. binata hedgerows delayed the peak time of wheat aphid occurrence, and E. binata hedgerow suppressed the wheat aphid population density significantly. In the wheat field with M. sativa hedgerow, the parasitoid densities were significantly higher than those with no hedgerow. An equal or significantly higher ladybird density was observed in the field with M. sativa hedgerow. The olfactory responses showed that E. binata volatiles had repellent effect on both Sitobion avenae and Rhopalosiphum padi, but attracted a spider species of oxyopidae. M. sativa volatiles attracted S. avenae, whereas neither M. sativa nor E. binata volatiles caused obvious behavior response of ladybird adults. Therefore, planting A. fruticosa and E. binata as the hedgerows in hillside wheat fields could not only prevent the soil erosion from seasonal rainfall, but also benefit the control of pest insects.
本文研究了在中国西南部四川省资阳市的山坡麦田种植不同种类的植物篱（紫穗槐、香根草、扁穗牛鞭草和紫花苜蓿）对小麦蚜虫及其天敌种群动态的影响。在20度的山坡上，紫穗槐植物篱显著抑制了麦田中小麦蚜虫的发生，其寄生蜂密度等于或显著低于种植香根草植物篱的麦田。在12度的山坡上，紫花苜蓿和扁穗牛鞭草植物篱延迟了小麦蚜虫发生的高峰期，且扁穗牛鞭草植物篱显著抑制了小麦蚜虫的种群密度。在种植紫花苜蓿植物篱的麦田中，寄生蜂密度显著高于无植物篱的麦田。在种植紫花苜蓿植物篱的田块中观察到瓢虫密度相等或显著更高。嗅觉反应表明，扁穗牛鞭草挥发物对麦长管蚜和禾谷缢管蚜均有驱避作用，但吸引了一种狼蛛科蜘蛛。紫花苜蓿挥发物吸引麦长管蚜，而紫花苜蓿和扁穗牛鞭草挥发物均未引起瓢虫成虫明显的行为反应。因此，在山坡麦田种植紫穗槐和扁穗牛鞭草作为植物篱，不仅可以防止季节性降雨造成的土壤侵蚀，还有利于害虫的防治。
