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Journal of Plant Nutrition and Fertilizers (ISSN 1008-505X), a peer-reviewed sci-tech academic journal with English abstracts, key words and references, is superintended by the Ministry of Agriculture and Rural Affairs of China, sponsored by the Chinese Society of Plant Nutrition and Fertilizer, administered by the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences.
Journal of Plant Nutrition and Fertilizers was started in September of 1994,and officially published in 1999. As one of the high-level academic journals in the field of integrated agricultural sciences in China, the journal has the highest impaction factor in both the fields of fundamental agricultural sciences and agronomy sciences in China since 2008. It has been honored a member of Core Sci-Tech Journal of China since 2013, and was one of the 100 Outstanding Academic Journals of China (2007), Outstanding S&T Journal of China (2008, 2011, 2017). The journal is accepted by some important international and national databases and retrieval systems, such as Chemical Abstract (CA) of USA, Centre Agriculture Bioscience International (CABI), Japanese Science Technology Agency (JST), Chinese Electronic Periodical Services (CEPS), Chinese Academic Journal Comprehensive Evaluation Database (CAJCED), FAO database (AGRIS), etc. as data source.
More>Application of superabsorbent polymers (SAPs) is an effective measure to improve drought resistance of crops. However, slightly excessive application rate will lead to adverse effects, such as decline of seed germination rate, yield decrease, poor root growth and so on. The indirect causes of the adverse effects could be the competition for soil moisture by crops and reduced soil aeration. The direct cause of the adverse effects is the inhibition of crop growth caused by the residual water-soluble components in SAPs, such as acrylic acid and sodium. Acrylic acid is toxic to animals and plants, but its quick degradation under normal moisture conditions lessens its danger. However, if SAPs absorb water and form gel in soil, the half-life of acrylic acid in the gel will be greatly elongated, and might damage the crops. Most studies on the possible direct damage of monomers in SAPs were conducted under normal soil moisture conditions. Therefore, the safe and effective application of SAPs still needs to be studied under drought conditions. The safe concentration and threshold for crop growth, the degradation kinetics of monomer components under drought conditions, and the toxicity of degraded monomers to soil, animals and plants under drought conditions need to be extensively studied. The degradation, dilution and diffusion characteristics of harmful components in SAPs under different soil conditions and the risk in different crop growing periods are also unclear. The limitations of the residual quantity of monomer should be considered in current industrial standard of SAPs, so as to provide guidance for the safe use of SAPs. In general, the safe and efficient application of polymers rely on the screening of SAPs with low biotoxicity of monomers, the optimized synthesis parameters to reduce the residue of monomers, and the specified application methods.
Theoretically, there are mainly two processes for developing new fertilizer products, one is to develop fertilizers with available nutrents, and the other is to exploit fertilizers with high-nutrient use efficiency. Guided by the theory of plant mineral nutrition, the process of developing fertilizer products with available nutrents has achieved the establishment of contemporary chemical fertilizer industry, with synthetic ammonia and wet-process phosphoric acid as its typical technology, which has made great contribution to world agricultural development and food security. The process of developing fertilizer products with high-nutrient use efficiency employs strategies of interdisciplinary, multi-tech integration and multi-way synergy to achieve multi-functions, high efficiency of the products to attain optimum yield increase and environmental sustainability. The evolution of chemical fertilizer products has driven the transformation and upgrading of the chemical fertilizer industry from 1) the primary stage of chemical fertilizer (the 1.0 era of chemical fertilizer industry) into 2) the low concentration chemical fertilizer stage (the 2.0 era of chemical fertilizer industry) and into 3) the high concentration chemical fertilizer stage (the 3.0 era of chemical fertilizer industry), and then 4) the efficient and sustainable chemical fertilizer stage (the 4.0 era of chemical fertilizer industry) which will arrive in the future.