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在日光温室中通过施用鸡粪、蚯蚓粪2种有机肥及添加生物碳,采用滴灌和漫灌2种灌溉模式研究不同的施肥和灌溉模式对土壤碳和土壤酶活性的影响。结果表明:1有机肥的施用提高了土壤脲酶、磷酸酶、过氧化氢酶的活性,但只有Q+C+D处理提高了34.6%土壤纤维素酶的活性,其他处理则降低了土壤纤维素酶的活性。生物碳的加入提高了土壤脲酶的活性,对其他酶的影响不一。滴灌提高了J+C+D处理40.6%脲酶活性和J+D处理20.3%的磷酸酶活性,对其他处理没有显著影响。2有机肥的施用提高了土壤硝态氮的含量,其中J+C+D处理的硝态氮含量最高,达50.5 mg·kg-1,相同施肥处理中滴灌也显著提高了土壤硝态氮的含量。3施用有机肥后显著提高了土壤的TC、TOC、WSTC、WSOC含量,较对照分别提高了5.0%~36.3%、11.8%~63.9%、5.2%~48.8%、5.6%~46.5%。生物碳的加入也提高了土壤TC、TOC、WSTC、WSOC含量。漫灌显著降低了J+C+M处理土壤TC、TOC、WSTC、WSOC含量。4土壤WSTC与土壤脲酶、过氧化氢酶、纤维素酶活性都达到了显著的正相关,而WSOC只与土壤脲酶活性有显著的相关关系。土壤IC与纤维素酶、磷酸酶活性达到了显著的负相关。
The effects of different fertilization and irrigation modes on soil carbon and soil enzyme activities were studied by using two kinds of organic manure including chicken manure and vermicompost and the addition of biochar in sunlight greenhouse. The two irrigation modes were drip irrigation and flood irrigation. The results showed that: (1) The application of organic manure increased soil urease, phosphatase and catalase activities, but only Q + C + D treatment increased soil cellulase activity by 34.6%, while other treatments decreased soil cellulose Enzyme activity. The addition of biochar increased soil urease activity, with different effects on other enzymes. Drip irrigation increased 40.6% urease activity and 20.3% phosphatase activity of J + C + D treatment J + D, but had no significant effect on other treatments. The application of organic manure increased soil nitrate nitrogen content, of which the nitrate nitrogen content of J + C + D was the highest (50.5 mg · kg-1), and the drip irrigation of the same fertilization treatment also significantly increased the nitrate nitrogen content. Compared with the control, the contents of TC, TOC, WSTC and WSOC in the soil increased by 5.0% -36.3%, 11.8% -63.9%, 5.2% -48.8% and 5.6% -46.5%, respectively. The addition of biochar also increased soil TC, TOC, WSTC, WSOC content. Flooding significantly reduced soil TC, TOC, WSTC and WSOC content in J + C + M treatment. Soil WSTC and soil urease, catalase, cellulase activity have reached a significant positive correlation, and WSOC only with soil urease activity was significantly correlated. Soil IC and cellulase, phosphatase activity reached a significant negative correlation.