Research Progress

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  Fertilization Effects on Microbial Resource Limitation in Karst Soil

  Researchers in the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) investigated the effects of long-term (11 years) fertilization on microbial resource limitation in a karst cropland under maize–soybean rotation. Soil microbial resource limitation was assessed using enzymatic stoichiometry.

  Oct 24, 2019
• Landscape and livestock planning simultaneously effectively improve water quality

  Based on the monitored riverine water flux and observed riverine P levels and loadings, and statistical data, through the partial least squares regression (PLSR) technique, a team of researchers from the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) investigated the major natural and anthropogenic determinants of riverine P in one forest and ten agricultural catchments in subtropical China during 2011 to 2017.

  Oct 17, 2019
• Topography Modulates Effects of Nitrogen Deposition on Asymbiotic N2 Fixation in Soil but not Litter or Moss in a Secondary Karst Forest

  Recently, in order to assess how ANF in soil, litter and moss responds to N addition, and whether topography modulates the responses of ANF in soil, litter or moss to N addition, a research team led by researcher LI Dejun at the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) conducted an N addition experiment at two topographic positions, i.e., valley and slope of a secondary karst forest in southwest China.

  Sep 26, 2019
• Uridine dynamic administration affects circadian variations in lipid metabolisms in the liver of high fat-diet-fed mice

  Researchers from the Institute of Subtropical Agriculture (ISA) of the Chinese Academy of Sciences conducted a 2 weeks experiment to determine the effects of HFD and concomitant uridine supplementation at different times throughout the day on liver lipid and glucose metabolism in C57BL/6J mice.

  Aug 29, 2019
• Short-Term UMP/UR Administration Regulates Lipid Metabolism in Early-Weaned Piglets

  Researchers from the Institute of Subtropical Agriculture (ISA) of the Chinese Academy of Sciences conducted a 10-day experiment to investigate whether short-term UMP/UR treatment could regulate lipid metabolism in early-weaned piglets.

  Aug 29, 2019
• Uridine/UMP metabolism plays an important role on gut barrier integrity in segregated early weaned piglets

  Researchers from the Institute of Subtropical Agriculture (ISA) of the Chinese Academy of Sciences found that oral administration of UMP and UR affected the small intestinal morphology, improved the intestinal barrier integrity and modified the apoptosis levels of intestine thus reduced the incidence of diarrhea and improved growth performance of weaned piglets. And the intestinal morphological analysis of the piglets showed that UR increased the villus length/crypt depth ratio (V/C) in jejunum, and UR also increased the relative expression of Claudin-3 and E-cadherin in duodenum mucosa

  Aug 29, 2019
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  Split mineral fertilizer application decreases straw mineralization and the priming effect in paddy soil

  Researchers in the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) investigated split N and P addition decreases straw mineralization and the priming effect of a paddy soil. The team found that the application of split NP fertilization along with straw addition improved microbial enzyme activity, yielding the highest positive priming effect (PE) for CO2 emission. In contrast, compared with the control (no addition), split NP application decreased the positive PE for CH4 emission. Therefore, the straw-C-derived total CO2 equivalent emission was decreased by split NP application.

  Aug 17, 2019
• Effects of Elemental Magnesium and Magnesium Oxide on Ruminal Fermentation

  Scientists found that elemental Mg or MgO supplementation increased Mg2+ concentration and pH in comparison to the control without supplements. There was no statistical difference in ruminalMg2+ concentration between MgO and elemental Mg supplementation.

  Jul 23, 2019
• Spatial distribution and stoichiometry of soil carbon, nitrogen and phosphorus along an elevation gradient in Dongting Lake wetland, China

  The researchers found that the ratios of C:P and N:P had similar patterns of distribution to soil organic carbon (SOC) and total nitrogen (TN). The SOC, TN, C:N, C:P and N:P ratios increased with increasing elevation, whereas total phosphorus (TP) showed no marked change. Furthermore, SOC, TN, C:N, C:P and N:P decreased considerably with increasing duration of submergence, soil moisture and pH.

  Jul 16, 2019
• The time of calcium feeding to sows during late pregnancy and lactation improved the growth performance of suckling piglets

  Researchers from the Institute of Subtropical Agriculture (ISA) of the Chinese Academy of Sciences found that the time of Ca to sows during late pregnancy and lactation affected productive performance of sows, compared to conventional feeding regimes.

  Jul 02, 2019