Bulletin of Chinese Academy of Sciences (Chinese Version)


marginal land, productivity improvement, conservation, sustainable exploitation, resource database, soil obstacle, resistant variety, functional microorganism, ecological farmland

Document Type

Strategy & Policy Decision Research


Marginal land refers to the land with low agricultural productivity and economic benefit and fragile ecology due to the prominent limitation of soil barrier, strong restriction of water and heat resources as well as harsh topographic conditions. In China, the existing marginal land is about 1.17 billion mu (15 mu is equal to 1 ha), which is the most important resource of strategic emergency to deal with the cultivated land gap of 700 million mu. Marginal land storage is a major strategy for national food security. It has become a new international research trend to increase the productivity and ecological functions of marginal land by modulating the interaction between plant and soil microbial. This includes breeding high stress-tolerant plants, screening and application of plant growth promotion rhizobacteria (PGPR) to promote plant growth on marginal land, and strengthening soil microbial functions to improve soil quality and health. In view of the marginal land productivity expansion and ecological benefit improvement, it is necessary to formulate the overall action plans based on the principles of ecological priority and green development. We should carry out the marginal land R & D project with the idea of "plant first, soil-improvement as the base, water security, microbial control, and the integration of plant-soil-microbial ecological system". (1) We should build a national database of marginal land and formulate the protection and management zoning plan. (2) We should develop four aspects of basic theory research namely, stress-tolerant plants breeding and its adaptive mechanism, efficient utilization of water and fertilize, soil obstacle factor reduction and biological networks induction/acclimatization, and the interaction between plant and microbial. (3) Focusing on coastal saline-alkali land in north and east China, soda alkali-saline land in northeast China, saline-alkali land in northwest inland, yellow spongy soils slope on the loess plateau, red soil and purple soil slope land in south hilly region, we should build different types of ecological farmland by integrating various technologies and theories. This will promote the protection and sustainable utilization of marginal land resources, and support the timely launch of the efficient use of contiguous marginal land to achieve the goal of increasing productivity by adding 700 million mu of medium-high grade arable land. This will be also helpful to ensure the implementation of the strategy of "storing grain in land and technology" and rural vitalization, and the construction of ecological civilization in China's ecologically fragile areas.

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Bulletin of Chinese Academy of Sciences

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1 中华人民共和国国土资源部. 2 0 1 6 中国国土资源公报.(2 0 1 7-0 4-2 8)[2019-04-29]. http://www.mnr.gov.cn/sj/tjgb/201807/P020180704391918680508.pdf.

2 中国科学院农业领域战略研究组.中国至2050年农业科技发展路线图.北京:科学出版社, 2009.

3 中华人民共和国农业农村部.关于全国耕地质量等级情况的公报(农业部公报[2014] 1号).(2014-12-17)[2019-04-29]. http://www.moa.gov.cn/govpublic/ZZYGLS/201412/t20141217_4297895.htm.

4 赵玉国,宋付朋.中国土系志·山东卷.北京:科学出版社, 2020.

5 曹志洪,周健民.中国土壤质量.北京:科学出版社, 2008.

6 杨林章,孙波.中国农田生态系统养分循环与平衡及其管理.北京:科学出版社, 2008.

7 孙波.红壤退化阻控与生态修复.北京:科学出版社, 2011.

8 沈仁芳,孙波,施卫明,等.地上-地下生物协同调控与养分高效利用.中国科学院院刊, 2017, 32(6):566-574.

9 Liang Y T, Jiang Y J, Wang F, et al. Long-term soil transplant simulating climate change with latitude significantly alters microbial temporal turnover. The ISME Journal, 2015, 9(12):2561-2572.

10 Luan L, Jiang Y J, Cheng M H, et al. Organism body size structures the soil microbial and nematode community assembly at a continental and global scale. Nature Communications, 2020, 11:6406.

11 Jiang Y J, Liu M Q, Zhang J B, et al. Nematode grazing promotes bacterial community dynamics in soil at the aggregate level. The ISME Journal, 2017, 11(12):2705-2717.

12 Dolfing J, Feng Y Z. The importance of soil archives for microbial ecology. Nature Reviews Microbiology, 2015, 13(3):1.

13 Zhong Y J, Yang Y Q, Liu P, et al. Genotype and Rhizobium inoculation modulate the assembly of soybean rhizobacterial communities. Plant, Cell&Environment, 2019, 42(6):2028- 2044.

14 薛勇彪,韩斌,种康,等.水稻分子模块设计研究成果与展望.中国科学院院刊, 2018, 33(9):900-908.

15 Xia K F, Ou X J, Tang H D, et al. Rice microRNA OsamiR1848 targets the obtusifoliol 14α-demethylase gene OsCYP51G3 and mediates the biosynthesis of phytosterols and brassinosteroids during development and in response to stress. New Phytologist, 2015, 208(3):790-802.

16 Fan Y Y, Wang Q, Kang L F, et al. Transcriptome-wide characterization of candidate genes for improving the water use efficiency of energy crops grown on semiarid land. Journal of Experimental Botany, 2015, 66(20):6415-6429.

17 Song Z H, Xu Q, Lin C, et al. Transcriptomic characterization of candidate genes responsive to salt tolerance of Miscanthus energy crops. GCB Bioenergy, 2017, 9(7):1222-1237.

18·Zhao X Q, Guo S W, Shinmachi F, et al. Aluminium tolerance in rice is antagonistic with nitrate preference and synergistic with ammonium preference. Annals of Botany, 2013, 111:69- 77.

19 Yuan Z L, Druzhinina I S, Labbé J, et al. Specialized microbiome of a halophyte and its role in helping non-host plants to withstand salinity. Scientific Reports, 2016, 6:32467.

20 Jiang Y N, Wang W X, Xie Q J, et al. Plants transfer lipids to sustain colonization by mutualistic mycorrhizal and parasitic fungi. Science, 2017, 356:1172-1175.

21 Liu T T, Liu Z X, Song C J, et al. Chitin-induced dimerization activates a plant immune receptor. Science, 2012, 336:1160- 1164.

22 Huang A C, Jiang T, Liu Y-X, et al. A specialized metabolic network selectively modulates Arabidopsis root microbiota. Science, 2019, 364:eaau6389.

23 Zhang J Y, Liu Y X, Zhang N, et al. NRT1.1B is associated with root microbiota composition and nitrogen use in fieldgrown rice. Nature Biotechnology, 2019, 37(6):676-684.

24 李振声,欧阳竹,刘小京,等.建设"渤海粮仓"的科学依据——需求、潜力和途径.中国科学院院刊, 2011, 26(4):371-374.

25 牛君仿,冯俊霞,路杨,等.咸水安全利用农田调控技术措施研究进展.中国生态农业学报, 2016, 24(8):1005-1015.

26 Guo K, Liu X J. Infiltration of meltwater from frozen saline water located on the soil can result in reclamation of a coastal saline soil. Irrigation Science, 2015, 33(6):441-452.

27 自然资源部,财政部,生态环境部.山水林田湖草生态保护修复工程指南(试行).(2020-08-26)[2021-01-25]. http://gi.mnr.gov.cn/202009/t20200918_2558754.html.