Abstract:

In order to improve the fertilizer use efficiency, research and develop environment-friendly fertilizers, which can control the agricultural nonpoint source pollution from the source, a soil pot experiment was taken to study the effects of nano-preparation on the production, nutrient absorption, nitrogen fertilizer use efficiency, leaf chlorophyll content and some quality indexes of cabbage. The results showed that, the production, leaf chlorophyll content, the amount of nutrients (N, P, K) absorption and nitrogen fertilizer use efficiency of cabbage were increased by adding nano-hydroquinone and nano-tea-polyphenols in nitrogen fertilizer, and the higher adding amount of nano-preparation had a more obvious effect. The best effective treatment among the four nano-preparation treatments was the one with 4% tea-polyphenols. The production and nitrogen fertilizer use efficiency of cabbage were increased by 44.5% and 134.1%, respectively. However, the effect of adding nano-preparation on the quality of cabbage was different, the changes of soluble sugar content were little, the nitrate content was increased and the Vc content had a increasing trend. The content of Vc had no change in the treatment 4% tea-polyphenols while its dry weight increment was the highest. In short, nano-preparation could increase crop yields and improve the fertilizer efficiency.