An Examination of Regional Variations in Pesticide
Usage and Grain Yield in China Before and After
the Double Reduction Policy’s Adoption

There are few studies on the correlation between fertilizer reduction and pesticide reduction in agricultural production. However, exploring the synergy of fertilizer and pesticide reduction (SFPR) is crucial to the comprehensive realization of sustainable agriculture. This study reveals the spatialtemporal evolution patterns of the SFPR in China using the Thiel index and elasticity coefficient methods. The influencing factors of SFPR are empirically based on Synergy Theory. The results show that the proportion of China's fertilizer reduction is 12.43% and pesticide reduction is 27.32% from 2014 to 2020. That is, the performance of pesticide reduction is more significant in China. And there is a synergistic and positive correlation between fertilizer and pesticide reduction in the provinces of China. The results of the panel data regression model show that the SFPR relies significantly on government policy, financial support, agricultural planting structure, per capita GDP, and agricultural output value. Therefore, this study recommends further strengthening the awareness of responsibility for fertilizer and pesticide reduction at the provincial government and promoting the projects of fertilizer and pesticide reduction via a systematic approach.

Section: Sfpr In Chinamentioning

confidence: 99%

The Synergy of Fertilizer and Pesticide Reduction in China: Measurement and Driving Factors

Huang,

Yang,

Xiong

2024

“…Excessive use of chemical fertilizers might add damage to environment [12]. Although China has decreased the use of chemical fertilizer by 10% as of 2019, the fertilizer situation remains stressful at this time due to the rapid growth in the price of chemical fertilizer and the expense of growing food in China [13]. It is critical to continue to promote the coordinated application of organic and inorganic fertilizers in order to reduce chemical fertilizer application by using organic fertilizers to nourish low and medium yielding fields and to improve fertilizer utilization efficiency [14].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Total Organic Waste and Potential for Replacing Chemical Fertilizers in China

Shao

2024

The quantity of organic waste produced in China is enormous, and knowing the present situation of the country's total amount of organic waste and its nutritional supplies is important for both resource use and environmental safety. In order to analyze the potential for the utilization of organic wastes and the carrying capacity of the land, the current total amount of organic waste and its nutrient resources in China were estimated by reviewing Chinese statistical data and published literature. The study's objective was the production of major organic wastes (straw, livestock and poultry manure, rural human waste, sludge, and domestic organic waste) in China in 2021. The findings indicated that in 2021, its total resource would be 11.61×108 t, and its nutritional content would be 4075.24×104 t. In 2021, the nutrient contents of N, P 2 O 5 and K 2 O in the total nutrient content of organic waste in China were 1571.43×104 t, 733.52×104 t and 1770.29×104 t, respectively. In 2021, the N nutrient content of China's organic waste accounted for 67.48% of the recommended N application, the P 2 O 5 nutrient content accounted for 69.30% of the recommended phosphorus application, and the K 2 O nutrient content accounted for 131.09% of the recommended potassium application. From the perspective of China's overall scale, China has a large space for carrying and consuming livestock and poultry manure. When calculating the land carrying capacity based on nitrogen, the land carrying capacity index of China was 0.23, and when calculating the land carrying capacity based on phosphorus, the land carrying capacity index of China was 0.54. In general, China has a massive amount of organic waste materials and nutrients, with plenty of room for use. The current magnitude of farming places a minor strain on the land carrying capacity of animal manure. If the nutrient resource structure of China's organic waste remains unchanged and the entire amount is returned to the field, the nitrogen, phosphorus, and potassium nutrients in organic waste can satisfy 67.48%, 69.30%, and 100% of the nutrient requirements of various types of crops, respectively.

“…According to the UN Intergovernmental Panel on Climate Change (IPCC), good science-based agricultural practices can contribute at least 5.50×10 15 t of emission reduction potential (in CO 2 equivalent), with soil carbon sequestration accounting for up to 89% of this potential [2]. Since 2015, when China began to implement its chemical fertilizer reduction policy [3], the use of organic fertilizers and the optimization of agricultural management measures has been vigorously promoted in various regions, resulting in a clear trend of carbon enhancement in farmland soils. Some scholars have conducted extensive research on the impact of agricultural management practices on the organic carbon content of farmland soils, and the findings concluded that the scientific and reasonable application of both chemical and organic fertilizers has significantly contributed to the improvement of farmland soil organic carbon content [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Changes in the Organic Carbon Content of Agricultural Soils in the Middle and Lower Reaches of the Yangtze River in China: Based on Data from Long-Term Localization Experiments

Zhao,

Xu,

Wang

2023

The literature of long−term fertilization experiment in the Yangtze River Economic Belt from 1993 to 2023 was collected, and the data of farmland soil organic carbon were extracted and integrated. Using the normalization treatment and the analysis method of relative annual variation, the overall change of soil organic carbon content in farmland in the Yangtze River Economic Belt under long-term different fertilization measures was studied, and the change differences of soil organic carbon content under three tillage modes were compared, so as to judge and analyze the influence of the duration of the experiment on soil organic carbon dynamics. The results showed that under long-term different fertilization measures, the organic carbon content of farmland soil in the Yangtze River Economic Belt in China showed an overall upward trend. NP, NPK, O, and NPKO treatments all increased the organic carbon content of agricultural soils, with the NPKO treatment being the largest. The sole application of inorganic nitrogen fertilizer reduced the organic carbon content of the soil. The rates of change in soil organic carbon content were 0.11g•(kg•a) −1 , 0.31 g•(kg•a) −1 , and 0.30 g•(kg•a) −1 for dryland, paddy and water−dry rotation farmland, respectively. There is some variation in the rate of change of soil organic carbon content between soil types. The average rate of change of organic carbon was 0.20 g•(kg•a) −1 for red soils, 0.13 g•(kg•a) −1 for tidal soils and 0.19 g•(kg•a) −1 for rice soils. The trend of NPKO>O>NPK>NPK>NP>N is basically maintained for the rate of change of soil organic carbon content. N treatment showed a reduction in organic carbon content in all soil types. Considering the carbon fixation of farmland soil, the combined application of organic and inorganic fertilizers is a more suitable fertilization method in this area.