Recessive morphology transition (RMT) involves the smooth transition of farmland property rights, input structure, quality, and function. China’s agriculture has changed from a period of high-speed growth to a period of high-quality development. Compared with dominant morphology transition (DMT) characterized by quantitative focus, it is of more practical significance to explore the impact of RMT on high-quality agricultural development (HAD). This paper firstly constructed a multidimensional index system to quantify HAD. Based on analysis of the impact mechanism of RMT on HAD, a spatial econometric model was established to explore the impact by making use of the panel data of 27 provinces in China from 2003–2017. The results indicated that RMT and HAD both have positive geospatial correlation. Furthermore, the spatial econometric model provides more accurate results of the impact of RMT on HAD than panel models. If the RMT in a local province increases by 1%, HAD could be augmented by 0.13%. Likewise, RMT has a strong positive spatial spillover effect on HAD. If the RMT in a certain province increases by 1%, HAD could add 1.22% in neighboring provinces. The analysis suggests that spatial coordination of farmland use is an important foundation for constructing high-quality development association of regional agriculture. It is necessary to strengthen intergovernmental cooperation in the process of farmland recessive morphology transition and high-quality agricultural development.

The Late Palaeozoic tectonic evolution of the eastern Central Asian Orogenic Belt (CAOB) and the genesis of magmatic rocks in the terrane have been topics of debate for decades. We have tried to understand the processes involved in the evolution of the Late Palaeozoic Baolidao belt and magma generation by compiling data from more than 200 samples along with new age estimates and geochemical data. Spinel stability field melting of the subduction hydrated juvenile depleted mantle (DM) is the dominant mafic magma generating process. The crustal granitoids from the Late Carboniferous suite (320 ~ 300 Ma) and the Early Permian suite (300 ~ 280 Ma) have contrasting characteristics. The Late Carboniferous suite is characterized by lower crustal AFC process at hornblende‐dominated and plagioclase‐free pressure, which resulted in considerable growth of continental crust, while the Early Permian suite is characterized by low pressure partial melting (plagioclase stable in residue) of a thinned juvenile crust. The process of the extension of hydrous mantle coupled with crustal thinning from the Late Carboniferous to Early Permian can be used to explain the chemical and petrogenetic features of the Late Palaeozoic magmatism along the Baolidao belt. We propose that lithosphere‐scale extension should have been a key process in the tectonic evolution of the eastern CAOB during the Late Palaeozoic.

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