According to our analysis of variations in Chinas＇ industrial growth rate. industrial demand, industrial structure, regional structure and the performance of industrial firms, China ＇s＇ industrial economv is moving...According to our analysis of variations in Chinas＇ industrial growth rate. industrial demand, industrial structure, regional structure and the performance of industrial firms, China ＇s＇ industrial economv is moving towards＇ a ＂new normal＂ of slower growth and structural improvement. This process coincides with the late stage of China＇s industrialization, which international experience suggests is often frauht with twists and challenges. Among these challenges, great attention must be paid to overcapacity industrial restructuring and upgrades, and the ＂reindustrialization＂ of developed countries. As China enters the late stage of its industrialization, particularly during the 13th Five-Year Plan period from 2016 to 2020, the promotion of industrial development is of strategic significance for China to successfully complete industrialization and its economy to adapt to the ＂new normal ＂. In the face of these new challenges regarding industrial development, policymakers must strive to increase the dynamism of growth for industrial economy. In this new era, the momentum of industrial growth derives from the integration of the supply impetus of industrialization and the pull of demand caused by urbanization, while, the comprehensive deepening of refom provides the key source of momentum.展开更多
Root proliferation can be stimulated in a heterogeneous nutrient patch; however, the functions of the root proliferation in the nutrient-rich soil patches are not fully understood. In the present study, a two-year fie...Root proliferation can be stimulated in a heterogeneous nutrient patch; however, the functions of the root proliferation in the nutrient-rich soil patches are not fully understood. In the present study, a two-year field experiment was conducted to examine the comparative effects of localized application of ammonium and phosphorus (P) at early or late stages on root growth, nutrient uptake, and biomass of maize (Zea mays L.) on a calcareous soil in an intensive farming system. Localized supply of ammonium and P had a more evident effect on shoot and root growth, and especially stimulated fine root development at the early seedling stage, with most of the maize roots being allocated to the nutrient-rich patch in the topsoil. Although localized ammonium and P supply at the late stage also enhanced the fine root growth, the plant roots in the patch accounted for a low proportion of the whole maize roots in the topsoil at the flowering stage. Compared with the early stage, fine root length in the short-lived nutrient patch decreased by 44%-62% and the shoot dry weight was not different between heterogeneous and homogeneous nutrient supply at the late growth stage. Localized supply of ammonium and P significantly increased N and P accumulation by maize at 35 and 47 days after sowing (DAS); however, no significant difference was found among the treatments at 82 DAS and the later growth stages. The increased nutrient uptake and plant growth was related to the higher proportion of root length in the localized nutrient-enriched patch. The results indicated that root proliferation in nutrient patches contributed more to maize growth and nutrient uptake at the early than late stages.展开更多
文摘According to our analysis of variations in Chinas＇ industrial growth rate. industrial demand, industrial structure, regional structure and the performance of industrial firms, China ＇s＇ industrial economv is moving towards＇ a ＂new normal＂ of slower growth and structural improvement. This process coincides with the late stage of China＇s industrialization, which international experience suggests is often frauht with twists and challenges. Among these challenges, great attention must be paid to overcapacity industrial restructuring and upgrades, and the ＂reindustrialization＂ of developed countries. As China enters the late stage of its industrialization, particularly during the 13th Five-Year Plan period from 2016 to 2020, the promotion of industrial development is of strategic significance for China to successfully complete industrialization and its economy to adapt to the ＂new normal ＂. In the face of these new challenges regarding industrial development, policymakers must strive to increase the dynamism of growth for industrial economy. In this new era, the momentum of industrial growth derives from the integration of the supply impetus of industrialization and the pull of demand caused by urbanization, while, the comprehensive deepening of refom provides the key source of momentum.
基金Supported by the National Natural Science Foundation of China (NSFC) (Nos. 30890131 and 30925024)the Innovative Group Grant of the NSFC (No. 31121062)the Program of Introducing International Advanced Agricultural Science and Technology of the Ministry of Agriculture of China (948 Program) (No. 2011-G18)
文摘Root proliferation can be stimulated in a heterogeneous nutrient patch; however, the functions of the root proliferation in the nutrient-rich soil patches are not fully understood. In the present study, a two-year field experiment was conducted to examine the comparative effects of localized application of ammonium and phosphorus (P) at early or late stages on root growth, nutrient uptake, and biomass of maize (Zea mays L.) on a calcareous soil in an intensive farming system. Localized supply of ammonium and P had a more evident effect on shoot and root growth, and especially stimulated fine root development at the early seedling stage, with most of the maize roots being allocated to the nutrient-rich patch in the topsoil. Although localized ammonium and P supply at the late stage also enhanced the fine root growth, the plant roots in the patch accounted for a low proportion of the whole maize roots in the topsoil at the flowering stage. Compared with the early stage, fine root length in the short-lived nutrient patch decreased by 44%-62% and the shoot dry weight was not different between heterogeneous and homogeneous nutrient supply at the late growth stage. Localized supply of ammonium and P significantly increased N and P accumulation by maize at 35 and 47 days after sowing (DAS); however, no significant difference was found among the treatments at 82 DAS and the later growth stages. The increased nutrient uptake and plant growth was related to the higher proportion of root length in the localized nutrient-enriched patch. The results indicated that root proliferation in nutrient patches contributed more to maize growth and nutrient uptake at the early than late stages.
