沼肥与化肥配施对水稻产量及经济效益的影响

试验研究表明:在本试验条件下,各施肥水平的水稻产量差异没有达到显著水平,仅与无肥区产量达到5%的显著差异;施用沼肥基础上以化肥中等用量水平产量最高(470.0 kg/667m2),仅施用沼肥的处理产量位居第二,较最高产量仅低30 kg/667m2,而最高产量处理增加的投入远超过30 kg/667m2稻谷所产生的经济价值。因此,推广以沼肥为主要肥源,少施或不施化肥的水稻生产途径,是达到减少资源浪费,净化环境,提高农产品品质的有效途径。

Effects of Mixedly Applying Biogas Manure and Chemical Fertilizer on Rice Yield and Economic Benefit

The results show that the yield order of 5 tested application methods is the treatment 5(2667 kg/667m2 of biogas manure 13 kg/667m2 of urea 28.6 kg/667m2 of calcium magnesium phosphate 12 kg/667m2 of potassium sulfate),treatment 2(2667 kg/667m2 of biogas manure),treatment 3(17.4 kg/667m2 of urea 57 kg/667m2 of calcium magnesium phosphate 16 kg/667m2 of potassium sulfate),treatment 4(2667 kg/667m2 of biogas manure 8.7 kg/667m2 of urea 14.3 kg/667m2 of calcium magnesium phosphate 8 kg/667m2 of potassium sulfate) and CK(without applying any fertilizers),there is no significant difference among 4 tested application methods and there is 5% level of significant difference between tested application methods and CK.The yield of treatment 5 is only 30 kg/667m2 higher than treatment 2 but the input of treatment 5 is beyond the economic value produced by 30 kg/667m2 rice.Therefore,popularizing biogas manure as the main fertilizer with slightly applying chemical fertilizer or without applying chemical fertilizer is the effective way to reduce resources waste,protect environment and improve rice quality in rice production.