论文部分内容阅读
通过研究不同用量腐植酸有机肥与化肥配施对水稻增产效果的影响,筛选腐植酸有机肥的最佳施用方法和施用量。试验结果显示,施腐植酸有机肥对水稻增产增收效果显著。与不施肥处理(处理1)和纯施化肥处理(处理2)比较,罗山试验点分别增产28.2%~78.5%和15.5%~39.3%,固始试验点分别增产29.2%~75.2%和15.4%~35.6%。其中,以基施氮肥8千克/亩和腐植酸有机肥60千克/亩(处理8)效果最好,产值分别增加78.5%和75.2%;其次是氮肥8千克/亩和腐植酸有机肥20千克/亩基施处理(处理7)、氮肥8千克/亩和腐植酸有机肥30千克/亩基施和追施各半处理(处理5),且处理8、处理7和处理5三者间均无显著差异。从产量构成因子来看,腐植酸有机肥促进水稻增产主要是增加了有效穗数和每穗实粒数。综合考虑肥料投入成本和增加产值,以处理7最为经济。因此,农业生产上推荐氮肥8千克/亩和腐植酸有机肥20千克/亩基施。此外,在氮肥4千克/亩和腐植酸有机肥20千克/亩基施和追施各半施用(处理6)的情况下,水稻未减产,说明施用腐植酸有机肥可以适当降低氮肥用量。
Through the study of different dosage of humic acid combined with organic manure and chemical fertilizer on the yield-increasing effect of the screening of humic acid organic fertilizer best application method and application rate. Test results show that humic acid organic fertilizer on rice yield increase effect is remarkable. Compared with the non-fertilization treatment (treatment 1) and the pure-fertilizer treatment (treatment 2), the test points in Luoshan increased 28.2% -78.5% and 15.5% -39.3%, respectively, and the Gushi tests increased yields by 29.2% -75.2% and 15.4 % ~ 35.6%. Among them, the basal nitrogen fertilizer 8 kg / mu and humic acid organic fertilizer 60 kg / mu (treatment 8) the best, the output value increased by 78.5% and 75.2%; followed by nitrogen fertilizer 8 kg / mu and humic acid 20 kg / Mu basal treatment (treatment 7), nitrogenous fertilizer 8 kg / mu and humic acid organic fertilizer 30 kg / mu basal and topdressing half treatment (treatment 5), and treatment 8, treatment 7 and treatment 5 among the three No significant difference. Yield factors from the point of view, humic acid organic fertilizer to promote rice yield is mainly increased effective panicles and grains per panicle. Comprehensive consideration of fertilizer input costs and increase output, to deal with 7 most economical. Therefore, agricultural production recommended 8 kg / mu nitrogen fertilizer and humic acid organic fertilizer 20 kg / mu infrastructure. In addition, under the condition of 4 kg / mu nitrogen fertilizer and 20 kg / mu humic acid organic fertilizer and topdressing treatments (treatment 6), the yield of rice was not reduced, indicating that the application of humic acid organic fertilizer could reduce the amount of nitrogen fertilizer appropriately.