The effects of nano-preparation coated nitrogen fertilizer on growth,yield and nutrients absorption of early-rice were studied by using soil pot experiment.The results showed that applying nano-bentonite and nano-active carbon coated nitrogen fertilizer can increase yield and nutrients(N,P,K) absorption amount of early rice and promoting transportation of nutrients(N,P,K) to seeds,but the effects on leaf chlorophyll content and dry weight of early rice were not significant.Between two treatments with two different nano-preparations,the effe...