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为探讨鸡粪与化肥以不同比例配施对芸豆/玉米轮作土壤有机碳氧化稳定性及碳库管理指数的影响。通过2009–2014年的大田试验,研究了N100(尿素提供100%的氮)?M10N90(鸡粪和尿素分别提供10%和90%的氮)?M30N70(鸡粪和尿素分别提供30%和70%的氮)和M50N50(鸡粪和尿素各提供50%的氮)等不同施肥处理对芸豆/玉米轮作土壤有机碳(TOC)?微生物量碳(MBC)?易氧化碳(ROC)含量及有机碳氧化稳定性与碳库管理指数(CPMI)的影响?结果表明,M10N90、M30N70和M50N50处理的TOC含量分别比N100处理明显高出5.21%、12.74%和19.87%;M30N70处理的MBC、ROC含量和CPMI均最高,并显著高于其他处理,其中ROC含量分别较N100、M10N90和M50N50处理高出54.03%、16.50%和10.43%,CPMI分别高出75.10、30.75和27.94;但M30N70处理的有机碳氧化稳定系数显著低于其他处理,较N100处理下降35.95%?此外,该处理能显著提高芸豆产量,并明显改善品质,且影响效果明显优于其他处理。相关性分析表明,芸豆产量、Vc含量与MBC、ROC、有机碳氧化稳定系数和CPMI之间有极显著或显著的相关性,各指标间具有紧密的内在联系。综合分析认为,在芸豆/玉米轮作种植中配施鸡粪措施有利于提高土壤质量,增强土壤供肥性能,并促进芸豆的高产优质生长,其中鸡粪与化肥以3:7比例搭配的作用效果最佳?
In order to investigate the effects of different ratios of chicken manure and chemical fertilizers on the stability of soil organic carbon and the management index of carbon pool in kidney bean / corn rotation. N100 (urea provides 100% nitrogen) M10N90 (chicken manure and urea provide 10% and 90% nitrogen, respectively) through field trials in 2009-2014 M30N70 (chicken manure and urea provide 30% and 70% respectively % Of nitrogen) and M50N50 (50% of nitrogen supplied by chicken manure and urea respectively). The contents of soil organic carbon (TOC), microbial biomass carbon (MBC) The results showed that the contents of TOC in M10N90, M30N70 and M50N50 were significantly higher than those in N100 by 5.21%, 12.74% and 19.87%, respectively. The contents of MBC and ROC in M30N70 And CPMI were the highest and were significantly higher than those of other treatments. The contents of ROC were 54.03%, 16.50% and 10.43% higher than those of N100, M10N90 and M50N50, respectively, and the CPMI was 75.10, 30.75 and 27.94 higher than that of other treatments. However, the M30N70- Oxidation stability coefficient was significantly lower than other treatments, 35.95% lower than the N100 treatment? In addition, the treatment can significantly increase the yield of kidney beans, and significantly improve the quality, and the effect is significantly better than other treatments. Correlation analysis showed that there was a significant or significant correlation between the yield and Vc content of kidney bean and the MBC, ROC, the coefficient of organic carbon oxidation stability and CPMI, and there was a close internal relationship among the indexes. Comprehensive analysis shows that the application of chicken manure during the planting of kidney bean / corn rotation is conducive to improving soil quality, enhancing soil fertility and promoting high yield and quality growth of kidney bean, and the effect of the combination of chicken manure and chemical fertilizer with 3: 7 ratio optimal?