A field experiment on nitrogen dynamics and cycling in integrated rice-duck and rice-fish ecosystems in subtropical region of China was conducted from May to September in 2007. The experiment field was equally divided into nine plots for three different treatments: conventional rice field (CK), integrated rice-duck ecosystem (RD) and rice-fish...

Zizania-rice rotation system was established and treated by 3 fertilizing methods. We analyzed the effects of fertilizer treatments on the environment and crop yield of zizania-rice rotation system. Results showed that the organic fertilizer was beneficial to zizania-rice rotation system both in ecological terms and for soil fertility. Soil in...

The growth conditions of three kinds of aquatic plant was researched in purification experiments. We analyzed three different concentrations of eutrophic water and three species of aquatic plants, namely Acorus calamus, Typha orientalis and Iris tectorum. Nitrogen and phosphorus removal capacity of eutrophic water were analyzed. The results showed that Typha...

The Huangpu River, a source of drinking water, has been highly contaminated in recent years by fertilizer-rich agricultural drainage from extensive fertilizer uses in vegetable farms for high yields in the suburbs of Shanghai. A fertilizer-use reduction experiment (between 20 and 40%), in combination with a newly composed mixture of...

The loss of nitrogen and phosphorus due to excessive fertilizer application has become a major form of agricultural non-point pollution. In order to explore the impact of different planting patterns (conventional cultivation, green rice-frog ecosystem and organic rice-frog ecosystem) on nitrogen and phosphorus loss, a field experiment in three paddy...

The elemental composition of a subcellular compartment, cell, tissue or organism is termed as ionome, which involves of all mineral elements of life, regardless of chemical forms these occur. Ionome is the inorganic chemical element’s fingerprint of plant that quantitatively and accurately reflects inorganic response of plants to environment stimuli....