Public–private partnership model for intensive maize production in China: A synergistic strategy for food security and ecosystem economic budget,Food and Energy Security

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Public–private partnership model for intensive maize production in China: A synergistic strategy for food security and ecosystem economic budget
Food and Energy Security ( IF 5 ) Pub Date : 2021-07-27 , DOI: 10.1002/fes3.317
Xingbang Wang _{1,

2,

3} , Wushuai Zhang _{1,

2} , Prakash Lakshmanan _{2,

4,

5} , Chunrong Qian ₆ , Xuanliang Ge ₆ , Yubo Hao ₆ , Junhe Wang ₇ , Yutao Liu ₇ , Huiying Yang ₇ , Zhongdong Zhang ₈ , Zhengyu Guo ₈ , Shuai Gong ₈ , Tinglu Fan ₉ , Jianjun Zhang ₉ , Guohao Dong ₁₀ , Dongfeng Shen ₁₁ , Yuhong Wang ₁₁ , Weidong Cheng ₁₂ , Juzhi Lv ₁₂ , Xiuquan Wang ₁₃ , Tingqi Lu ₁₃ , Chaojing Yin ₁₄ , Huan Yang ₁ , Jinlin Luo ₁ , Yuan Qiao ₁ , Zhi Yao ₁ , Xinping Chen _{1,

2}

Affiliation

College of Resources and Environment, and Academy of Agricultural Science Southwest University Chongqing China
Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin Southwest University Chongqing China
Center for Resources Environment and Food Security China Agricultural University Beijing China
Sugarcane Research Institute Guangxi Academy of Agricultural Sciences Nanning China
Queensland Alliance for Agriculture and Food Innovation University of Queensland St Lucia Qld Australia
Institute of Crop Tillage and Cultivation Heilongjiang Academy of Agricultural Sciences Harbin China
Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences Qiqihar China
Maize Research Institute Shanxi Academy of Agricultural Sciences Xinzhou China
Institute of Dry Land Agriculture Gansu Academy of Agricultural Sciences Lanzhou China
Maize Research Institute Dezhou Academy of Agricultural Sciences Dezhou China
Maize Research Institute Luoyang Academy of Agriculture and Forestry Sciences Luoyang China
Maize Research Institute Guangxi Academy of Agricultural Sciences Nanning China
Maize Research InstituteMianyang Institute of Agricultural Sciences Mianyang China
College of Economics and Management Southwest University Chongqing China

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 maize-growing 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 SHF, depending on the region studied. PPP significantly reduced reactive nitrogen losses by 31.3%–35.5% compared with SHF 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.

更新日期：2021-07-27

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