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利用天津日光温室蔬菜不同施肥模式定位试验,研究了6种施肥模式对设施菜田土壤酶活性的影响.结果表明:番茄生育期间不同施肥模式土壤α-葡萄苷酶、β-木糖苷酶、β-葡萄苷酶、β-纤维二糖苷酶、几丁质酶和磷酸酶的活性总体上均呈先增后降的趋势,土壤脲酶活性呈先增高后趋于平缓的趋势.与全部施用化肥氮相比,5种有机无机肥料配施模式土壤酶活性均有所提升,且随猪粪施用量的增加,尤其是配施秸秆条件下,土壤酶活性显著增加.番茄各生育期土壤酶活性与土壤微生物生物量碳、氮和可溶性有机碳、氮之间总体上呈显著或极显著正相关关系.同等养分投入量下,有机无机肥配施,特别是配施一定的秸秆可有效提高设施菜田土壤酶活性,维持较高的菜田土壤肥力,有利于设施蔬菜的可持续生产.
The effects of six fertilization modes on the soil enzyme activities in vegetable field were studied using the experiment of different fertilization modes in solar greenhouse of Tianjin.The results showed that the activities of soil α-glucosidase, β-xylosidase, β -Glucosidase, β-cellobiosidase, chitinase and phosphatase generally increased first and then decreased, soil urease activity first increased and then tended to be gentle.Compared with the total application of chemical nitrogen Compared with the control, the soil enzyme activities of five organic-inorganic fertilizers application modes increased, and with the increase of pig manure application, especially with straw, soil enzyme activity increased significantly Soil microbial biomass carbon, nitrogen and soluble organic carbon, nitrogen in general showed a significant or very significant positive correlation between the same amount of nutrients, organic and inorganic fertilizers, especially with a certain amount of straw can effectively improve the facilities of vegetables Field soil enzyme activity, to maintain high soil fertility of vegetable fields, conducive to the sustainable production of vegetable facilities.