Pattern and contributing factors of increasing production of oilseed in China
The 14th consecutive bumper harvest of oilseed production in China from 2007 to 2021 is of great significance to the country's grain and oil security.In order to further explore the pattern and underlying causes of increased oilseed production,and promote the improvement of quality and efficiency in China's oilseed production,based on basic data from 2007 to 2021 on the planting area,yield and yield per unit area of the three major oilseed crops,soybean,rapeseed and peanut,the logarithmic mean dirichlet index decomposition(LMDI)model was used to quantitatively analyze the increase of oilseed production from 2007 to 2021 and its regional differences from the national and provincial perspectives.The regional pattern and its contributing factors of the increase of main oilseed production were further studied.The results showed that soybean,rapeseed and peanut were the main factors for the 14th consecutive bumper harvest of oilseed production,and the contribution rate of the three oilseed crops to the increase of oilseed production was 96.3％,the contribution of peanut to the increase of oilseed production was the most significant,and peanut was in the leading position in terms of the increase of yield,contribution rate and annual average yield.The contribution of increasing yield per unit area to the increase of oilseed production was greater than that of expanding planting area.In the three oilseed crops,soybean production increase mainly relied on the increase of yield per unit area,while the production increase of rapeseed and peanut at the same time relied on the expansion of planting area and the increase of yield per unit area.From 2007-2021,oilseed production in only 17 provinces across the country increased,and the provinces with the production increase of more than 2 million tons,production increase reaching over increase only accounted for 9.7％,35.5％,respectively.In summary,fully and efficiently utilizing and developing existing land resources,and continuously improving the lever of yield per unit area of the three major oilseed crops are the key to solve the problem of sustainable development of oilseed crops in China.
oilseedproduction increasepatterncontribution factorLMDI model
NETL
NSTL
万方数据
维普
