1Soil and Fertilizer Institute，Anhui Provincial Academy of Agricultural Sciences，Key Laboratory of Nutrient Cycling，and Resource Environment of Anhui Province，Hefei 230031，Anhui，China；2Horticulture Institute，Anhui Provincial Academy of Agricultural Sciences，Hefei 230031，Anhui，China
Abstract：In order to investigate the effect of applying chemical fertilizer reduction in Zizania atifolia production，this paper took ‘Wanjiao No.1’as test material，and compared the effects of 4 treatments on agronomic traits，quality，yield and economic benefit of Zizania latifolia，including farmers conventional fertilization 100% chemical fertilizer plus chicken manure（CK），3 chemical fertilizer reduction modes：70.9% chemical fertilizer plus high range bio-organic fertilizer（T1），70.9% chemical fertilizer plus medium quantity bio-organic fertilizer（T2），and 70.9% chemical fertilizer plus medium quantity bio-organic fertilizer and decomposed cake fertilizer（T3）．The results showed that comparing with the CK，Zizania latifolia yields treated by chemical fertilizer reduction models（T1，T2 and T3）not changed much．But，the tiller numbers were decreased，and fruit formulation of Zizania latifolia were promoted ahead of time．The single plant weight and Zizania latifolia quality were significantly increased．T3 treatment had the best effect in yield increase and quality improvement．The single plant weight，reducing sugar，VC content of Zizania latifolia and fertilizer efficiency of T3 treatment were increased by 20.7%，62.2 %，47.9% and 8.1%，respectively than those of the CK．
