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In the context of frequent food crises, Angola needs to improve the efficiency of agricultural production to meet the rigid domestic demand for food consumption. China has accumulated experience and technology in agricultural production over the years, it is a strategic partner for Angola, and Angola has a prominent place in the destination of Chinese investments. Therefore, agricultural cooperation between China and Angola based on mutual benefits will not only help Angola solve the problem of self-sufficiency in food but also provide a broad space for Chinese agricultural technology to “go global”, thereby providing reliable domestic food security solutions. Through the SWOT method, this study analysed Angola’s agricultural development prospects and the current situation of China and Angola’s agricultural cooperation to build a SWOT matrix and formulate reliable agricultural cooperation development strategies for promoting agricultural cooperation between China and Angola.

Planting green manure is an effective way to improve the agricultural environment and the quality of cultivated land in China. However, deviation from green manure planting willingness and behavior (DWB) becomes a serious obstacle to the promotion of green manure planting technology. For economic farmers, whether to plant green manure is a rational choice made after weighing up family endowments. In addition, ecological cognition plays a moderating role in the “willingness-behavior” transformation process of farmers’ green manure planting on the basis of family endowments. We selected four counties in which to conduct a questionnaire survey in Gansu and carried out interviews with 375 farmers. Based on the survey data, our study identified determinants that influence farmers’ DWB and examined the moderating effect of ecological cognition. In our paper, results show that the probability of farmers’ DWB is 41.87%. Farmers’ DWB is not only negatively affected by social network information and ecological compensation (eco-compensation) and positively influenced by the scale of cultivated land, but also restricted by human capital endowment characteristics such as age and education. In addition, ecological cognition played a significant moderating effect on farmers’ DWB. Farmers with high ecological cognition were more aware and capable of promoting green manure planting intentions into practice. Furthermore, different groups of farmers had different characteristics of DWB. The findings are useful and helpful in better understand the influencing factors of farmers’ DWB for policy makers and managers and can provide some effective support for policies designed to encourage farmers to adopt more sustainable green manure.

Environmental impacts of milk production are depending on the production efficiency of livestock and cropland. A mode of integrated maize silage planting and dairy breeding system (IPBS) has been widely promoted in China, as a promising way to recycle manure, reduce chemical fertilizer consumption and improve soil quality. However, quantitative environmental impacts and mitigation potential of this system remains unclear. In this study, based on life cycle assessment (LCA), environmental performance of non-IPBS and IPBS were compared: non-IPBS only involved dairy cow breeding, whereas maize silage planting was incorporated in IPBS. Results indicated that, although 60% of the surveyed dairy farms adopted IPBS, the self-sufficiency rate of maize silage was 57%. Compared with non-IPBS, IPBS had apparent potential in reducing global warming potential (−14%), acidification potential (−10%), eutrophication potential (−18%), non-renewable energy use (−10%), water use (−8%) and land use (−13%). It is estimated that, in China, 81% of dairy farms could adopt IPBS, resulting in a reduction of approximately 21% in greenhouse gas (GHG) emissions to compared with current situation, but the premise is that 2.0 million ha cropland should be applied for maize silage cultivation. Interestingly, environmental performance of IPBS was affected by the self-sufficiency rate of maize silage and restricted by milk yield and maize silage yield. Thus, mitigation of environmental impacts of milk production could be realized by combining a short-term strategy of increasing maize silage planting area in dairy farms and a long-term plan for technological improvements in the yield of crop and milk.

For the sake of reducing the application of chemical fertilizers (CF) and achieve the goal of Zero Growth of CF until 2020, Chinese government released the “Action Plan for Organic-Substitute-Chemical-Fertilizer (OSCF) for Fruits, Vegetables and Tea” and initially performed it in 100 pilot counties from 2017. Each pilot county rewarded 10 million CNY as subsidy to substitute CF with organic fertilizers (OF). This study examines the effects of the OSCF policy using survey data of 281 greenhouse vegetable farmers in the Shandong province of China. The Difference-in-Difference (DID) method is employed to get the net effects of the policy on the utilization of replacing CF. The results show that the OSCF policy helps to significantly reduce the application of CF and increase OF’s utilization for vegetable farmers, and on average CF drops 111.5 kg/ha while OF increases 346.36 kg/ha for the sampling farmers. Additional analysis reveals that the effects of the policy are heterogeneous across the cost of CF and household-level characteristics. The results provide evidences for further enhancing the policy effects.