文献类型： 外文期刊

作者： Wang, Xingbang ¹ ; Zhang, Wushuai ¹ ; Lakshmanan, Prakash ³ ; Qian, Chunrong ⁷ ; Ge, Xuanliang ⁷ ; Hao, Yubo ⁷ ; Wang, ¹ ;

作者机构： 1.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China

2.Southwest Univ, Acad Agr Sci, Chongqing 400715, Peoples R China

3.Southwest Univ, Interdisciplinary Res Ctr Agr Green Dev Yangtze R, Chongqing, Peoples R China

4.China Agr Univ, Ctr Resources Environm & Food Secur, Beijing, Peoples R China

5.Guangxi Acad Agr Sci, Sugarcane Res Inst, Nanning, Peoples R China

6.Univ Queensland, Queensland Alliance Agr & Food Innovat, St Lucia, Qld, Australia

7.Heilongjiang Acad Agr Sci, Inst Crop Tillage & Cultivat, Harbin, Peoples R China

8.Heilongjiang Acad Agr Sci, Qiqihar Branch, Qiqihar, Peoples R China

9.Shanxi Acad Agr Sci, Maize Res Inst, Xinzhou, Peoples R China

10.Gansu Acad Agr Sci, Inst Dry Land Agr, Lanzhou, Peoples R China

11.Dezhou Acad Agr Sci, Maize Res Inst, Dezhou, Peoples R China

12.Luoyang Acad Agr & Forestry Sci, Maize Res Inst, Luoyang, Peoples R China

13.Guangxi Acad Agr Sci, Maize Res Inst, Nanning, Peoples R China

14.Mianyang Inst Agr Sci, Maize Res Inst, Mianyang, Sichuan, Peoples R China

15.Southwest Univ, Coll Econ & Management, Chongqing, Peoples R China

关键词： environmental impacts; life cycle assessment; maize yield; smallholder farmer; technology package

期刊名称：FOOD AND ENERGY SECURITY （ 影响因子：4.109； 五年影响因子：8.33 ）

ISSN： 2048-3694

年卷期： 2021 年 10 卷 4 期

页码：

收录情况： SCI

摘要： Small farms are the mainstay of maize production in China. Its productivity is relatively low despite large farm inputs and the associated environmental footprints. Here, we studied public-private partnership (PPP) model for sustainable intensification of maize production to achieve co-benefits of food security and environmental sustainability. The PPP model enabled the development of an effective partnership by bringing complementary skills, knowledge, proprietary products and technologies, and resources of public research community and private enterprises to create a new, operational maize farming system in China. We conducted on-farm research with farmer participation in four major maizegrowing regions spanning temperate to sub-tropical zones in China for 2 years. The PPP model achieved 78.7% of maize yield potential compared with 61.8% realized in smallholder farm (SHF) (11.0 Mg ha(-1) vs. 8.6 Mg ha(-1)). Overall, environmental externalities of PPP were up to 32.7% lower than that of Silk?, depending on the region studied. PPP significantly reduced reactive nitrogen losses by 31.3%-35.5% compared with Sill' in both years. There was no significant difference between PPP and SHF for greenhouse gas emission in 2018, but it was significantly lower in PPP (19%) compared to SHF in 2019. Similarly, PPP significantly reduced soil acidification potential (by 10.1%-42.2%) and eutrophication of waterbodies (21.5%) in comparison to SHF. Overall, the net ecosystem economic budget increased 277 USD ha(-1) with PPP. The PPP model provides new insights into improving food security and ecosystem and economic budget. As a logical progression to our research, future work should focus on (a) the reasons for the persistence of inter-regional yield gap in PPP model and (b) to gain a better understanding of socioeconomic drivers critical for successful PPP in different maize-growing regions.