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Multi-country evidence that crop diversification promotes ecological intensification of agriculture

文献类型： 外文期刊

作者： Gurr, Geoff M. 1 ; Lu, Zhongxian 3 ; Zheng, Xusong 3 ; Xu, Hongxing 3 ; Zhu, Pingyang 4 ; Chen, Guihua 4 ; Yao, Xiaomi 1 ;

作者机构： 1.Fujian Agr & Forestry, Inst Appl Ecol, Fujian 35002, Fujian, Peoples R China

2.Charles Sturt Univ, Graham Ctr, Orange, NSW 2800, Australia

3.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China

4.Jinhua Plant Protect Stn, Jinhua 321017, Peoples R China

5.Zhejiang Univ, Inst Insect Sci, Hangzhou 310058, Zhejiang, Peoples R China

6.Int Rice Res Inst, Crop & Environm Sci Div, DAPO Box 7777, Manila 1301, Philippines

7.Southern Reg Plant Protect Ctr, Long Dinh 860000, Vietnam

8.Chainat Rice Res Ctr, Chainat 17000, Thailand

9.Inst Agr Sci Southern Vietnam, Ho Chi Minh City 700000, Vietnam

10.TienGiang Univ, Tien Giang 860000, Vietnam

11.Bur Rice Res & Dev, Rice Dept, Bangkok 10220, Thailand

12.Lincoln Univ, Bioprotect Res Ctr, Christchurch 7642, New Zealand

13.Univ Putra Malaysia, South East Asia Reg Ctr, CABI, Serdang 43400, Malaysia

期刊名称：NATURE PLANTS （ 影响因子：15.793； 五年影响因子：17.349 ）

ISSN： 2055-026X

年卷期： 2016 年 2 卷 3 期

页码：

收录情况： SCI

摘要： Global food security requires increased crop productivity to meet escalating demand(1-3). Current food production systems are heavily dependent on synthetic inputs that threaten the environment and human well-being(2,4,5). Biodiversity, for instance, is key to the provision of ecosystem services such as pest control(6,7), but is eroded in conventional agricultural systems. Yet the conservation and reinstatement of biodiversity is challenging(5,8,9), and it remains unclear whether the promotion of biodiversity can reduce reliance on inputs without penalizing yields on a regional scale. Here we present results from multi-site field studies replicated in Thailand, China and Vietnam over a period of four years, in which we grew nectar-producing plants around rice fields, and monitored levels of pest infestation, insecticide use and yields. Compiling the data from all sites, we report that this inexpensive intervention significantly reduced populations of two key pests, reduced insecticide applications by 70%, increased grain yields by 5% and delivered an economic advantage of 7.5%. Additional field studies showed that predators and parasitoids of the main rice pests, together with detritivores, were more abundant in the presence of nectar-producing plants. We conclude that a simple diversification approach, in this case the growth of nectar-producing plants, can contribute to the ecological intensification of agricultural systems.

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