Effects and rational application of controlled-release nitrogen fertilizer in paddy field of southern China Effect of controlled-release nitrogen fertilizer on CH4 emission in transgenic rice from a paddy soil Effects of controlled-release nitrogen fertilizers on yield and quality of Chinese cabbage and their related mechanisms Effects of controlled-release nitrogen fertilizer on carbon and nitrogen metabolism of summer maize Effect of different controlled-release nitrogen fertilizers on availability of heavy metals in contaminated red soils under waterlogged conditions