[目的]对几个乐业县有机水稻品种进行评价,并对其适宜有机肥施用量进行研究,以便减少投入,获得最高经济效益,促进农民增收.[方法]有机水稻品种评价试验共选用5个水稻品种,分别为丰优香黏、宜香2292、新香占、两优2186、八桂香.生物有机肥施用量试验所用有机肥配比为35％羊粪∶30％厩肥∶15.5％桐麸∶19％沼气渣液∶0.5％生物菌剂,其施用量分别为4 500、5 250、6 000、6 750、7 500、8 250 kg/hm2,水稻品种为宜香2292.[结果]有机水稻品种评价试验结果表明:八桂香产量最高,但食用时口感不是很好,品质不理想;亲香占是常规品种,产量太低,在目前市场前景不是很好、有机米的销售价格不高、利润也不高的情况下难以推广;丰优香黏抗逆性稍弱;宜香2292品质较好,产量也高,多年来成为有机水稻示范基地的主打品种.生物有机肥施用量试验结果表明:随着生物有机肥用量的增加,水稻产量也在不断增加;当有机肥用量大于6 750 kg/hm2时,增加幅度明显减小,说明投入增大,经济效益没有继续明显增加;当有机肥用量为6 750、7 500、8 250 kg/hm2时,产量很接近,说明施肥成本增加的情况下,收入没有呈正比增加.[结论]今后宜香2292将继续成为有机水稻种植的重要品种之一.6 750 kg/hm2有机肥用量为最佳的施肥用量,投入产出比最大.%[Objective] The aim was to evaluate several organic rice varieties of Leye County,and study the suitable bio-organic fertilizer application amount,to reduce the input,gain the highest economic benefit and then increase farmer income.[Method] In organic rice varieties evaluation test,5 rice varieties were selected,which was Fengyouxiangnian,Yixiang 2292,Xinxiangzhan,Liangyou 2186,Baguixiang resp..In bioorganic fertilizer application amount test,the organic fertilizer was 35％ sheep dung:30.0％ yard manure:15.5％ Clerodendrunm japonicum bran:19.0％ biogas sludge and broth:0.5％ biological agent,and its amount was 4 500,5 250,6 000,6 750,7 500,8 250 kg/hm2 resp.,the rice variety was Yixiang 2292.[Result] The organic rice varieties evaluation test results were as follows:Baguixiang' s yield was the highest,but its taste was not very good and its quality was unsatisfactory ; Qinxiangzhan was normal variety,and yield was very low,it was difficult to promote because of the situation of market prospect was not good present,organic rice' s sales price and profit was both not high ; Fengyouxiangnian was a little weak resistance to stress ; Yixiang 2292' a quality was better and yield was high,so it was the main variety of the organic rice demonstration base for the past many years.The bio-organic fertilizer application amount test results were as follows:With the increase of bio-organic fertilizer application amount,the rice yield was rose gradually.When its application amount was more than 6 750 kg/hm2,the yield' s increase rate reduced obviously,showed that the economic profit do not go on to rose evidently with the input increased; When its application amount was 6 750,7 500,8 250 kg/hm2,the yield was close,showed that the income did not rise proportionally with the increase of application fertilizer cost.[Conclusion] Yixiang 2292 goes on to become one of the important organic rice varieties in future,6 750 kg/hm2 is the best bio-organic fertilizer application amount and the the ratio of input to output is the biggest.
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