改良剂对旱地红壤活性有机碳及土壤酶活性的影响
发布时间：2018-09-11 09:43
【摘要】：针对江西旱地红壤肥力低下、生产力不高等突出问题,基于长期野外旱地红壤定位试验,研究了改良剂(生物质炭和过氧化钙)对旱地红壤活性有机碳及与碳代谢相关酶活性的影响。试验设置生物质炭施用量0(C0)、758(C1)、1 515(C2)kg/hm2和过氧化钙施用量0(Ca0)、61(Ca1)、121(Ca2)kg/hm2,生物质炭和过氧化钙单施和配施共9个处理,即CK、C0Ca1、C0Ca2、C1Ca0、C1Ca1、C1Ca2、C2Ca0、C2Ca1、C2Ca2。结果表明,生物质炭单施和配施均在一定程度上提高了旱地红壤有机碳及活性碳组分,且效果优于单施过氧化钙。C2Ca0、C2Ca1和C2Ca2处理土壤有机碳增加较显著。生物质炭和过氧化钙显著提高土壤活性有机碳组分,与对照(CK)相比,其中C1Ca0处理的微生物生物量碳平均增加了45.22%,C1Ca2处理的可溶性有机碳平均增加了21.34%,C1Ca0处理的颗粒有机碳平均增加了20.72%,C2Ca2处理的易氧化有机碳平均增加了22.19%。生物质炭和过氧化钙对提高碳库管理指数均有较好的效果,0~10 cm和10~20 cm土层分别平均增加了11.09%、14.07%。添加生物质炭对旱地红壤酶活性均有促进作用,且对0~10 cm土层土壤酶的影响较10~20 cm土层明显;配施C2Ca2明显提高旱地红壤淀粉酶、纤维素酶和β-葡糖苷酶活性,C1Ca1明显提高红壤蔗糖酶活性。因此,生物质炭和过氧化钙能有效改善旱地红壤活性有机碳组分以及与碳代谢相关酶活性,且生物质炭与过氧化钙配合施用对土壤改良的效果更好。
[Abstract]:In view of the outstanding problems of low fertility and low productivity in Jiangxi upland red soil, based on the long-term field experiment of the upland red soil, The effects of modifiers (biomass carbon and calcium peroxide) on active organic carbon and enzymes related to carbon metabolism in upland red soil were studied. The experiment set up 9 treatments of biomass carbon 0 (C0) 758 (C1) 1 515 (C2) kg/hm2 and calcium peroxide 0 (Ca0) 1 (Ca1) 1 1 (Ca2) kg/hm2, that is CK,C0Ca1,C0Ca2,C1Ca0,C1Ca1,C1Ca2,C2Ca0,C2Ca1,C2Ca2.. The results showed that the organic carbon and active carbon components of upland red soil were increased to some extent by single and combined application of biomass carbon, and the effect was better than that of calcium peroxide. C2Ca0, C2Ca1 and C2Ca2 treatments, and the increase of soil organic carbon was more significant than that of single application of calcium peroxide, C2Ca0, C2Ca1 and C2Ca2. Biomass carbon and calcium peroxide significantly increased soil active organic carbon components, compared with the control (CK). The microbial biomass carbon of C1Ca0 treatment increased by 45.22% and the soluble organic carbon of C _ 1 Ca _ 2 treatment increased by 21.34% C _ (1) Ca _ (0) on average, the particulate organic carbon of C _ (1) Ca _ (0) treatment increased by 20.72% C _ (2) Ca ~ (2 +) and the easily oxidized organic carbon of C _ (2) Ca _ (2) treatment increased 22.19%. Biomass carbon and calcium peroxide had a good effect on improving the carbon pool management index. The soil layers of 10 cm and 10 ~ 20 cm were increased by 11.09 ~ 14.07 and 11.09 ~ 14.07, respectively. The enzyme activity of red soil was promoted by adding biomass carbon, and the effect of adding biomass carbon on enzyme activity in 0 ~ 10 cm soil layer was more obvious than that in 10 ~ 20 cm soil layer, and the amylase activity in upland red soil was obviously increased by adding C2Ca2. Cellulase and 尾-glucosidase activity C _ 1Ca _ 1 significantly increased sucrase activity in red soil. Therefore, biomass carbon and calcium peroxide can effectively improve the activity of active organic carbon components and enzymes related to carbon metabolism in upland red soil, and the combination of biomass carbon and calcium peroxide can improve the soil better.
【作者单位】： 江西省红壤研究所;南昌工程学院江西省退化生态系统修复与流域生态水文重点实验室;土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所);
【基金】：江西省教育厅科研技术研究项目(GJJ161100) 国家自然科学基金项目(41461050,41661065,31760167) 2014年高校大学生创新创业教育计划专项 江西省2015年度研究生创新专项资金项目(YC2015-S416)资助
【分类号】：S156.6
本文编号：2236333
[Abstract]:In view of the outstanding problems of low fertility and low productivity in Jiangxi upland red soil, based on the long-term field experiment of the upland red soil, The effects of modifiers (biomass carbon and calcium peroxide) on active organic carbon and enzymes related to carbon metabolism in upland red soil were studied. The experiment set up 9 treatments of biomass carbon 0 (C0) 758 (C1) 1 515 (C2) kg/hm2 and calcium peroxide 0 (Ca0) 1 (Ca1) 1 1 (Ca2) kg/hm2, that is CK,C0Ca1,C0Ca2,C1Ca0,C1Ca1,C1Ca2,C2Ca0,C2Ca1,C2Ca2.. The results showed that the organic carbon and active carbon components of upland red soil were increased to some extent by single and combined application of biomass carbon, and the effect was better than that of calcium peroxide. C2Ca0, C2Ca1 and C2Ca2 treatments, and the increase of soil organic carbon was more significant than that of single application of calcium peroxide, C2Ca0, C2Ca1 and C2Ca2. Biomass carbon and calcium peroxide significantly increased soil active organic carbon components, compared with the control (CK). The microbial biomass carbon of C1Ca0 treatment increased by 45.22% and the soluble organic carbon of C _ 1 Ca _ 2 treatment increased by 21.34% C _ (1) Ca _ (0) on average, the particulate organic carbon of C _ (1) Ca _ (0) treatment increased by 20.72% C _ (2) Ca ~ (2 +) and the easily oxidized organic carbon of C _ (2) Ca _ (2) treatment increased 22.19%. Biomass carbon and calcium peroxide had a good effect on improving the carbon pool management index. The soil layers of 10 cm and 10 ~ 20 cm were increased by 11.09 ~ 14.07 and 11.09 ~ 14.07, respectively. The enzyme activity of red soil was promoted by adding biomass carbon, and the effect of adding biomass carbon on enzyme activity in 0 ~ 10 cm soil layer was more obvious than that in 10 ~ 20 cm soil layer, and the amylase activity in upland red soil was obviously increased by adding C2Ca2. Cellulase and 尾-glucosidase activity C _ 1Ca _ 1 significantly increased sucrase activity in red soil. Therefore, biomass carbon and calcium peroxide can effectively improve the activity of active organic carbon components and enzymes related to carbon metabolism in upland red soil, and the combination of biomass carbon and calcium peroxide can improve the soil better.
【作者单位】： 江西省红壤研究所;南昌工程学院江西省退化生态系统修复与流域生态水文重点实验室;土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所);
【基金】：江西省教育厅科研技术研究项目(GJJ161100) 国家自然科学基金项目(41461050,41661065,31760167) 2014年高校大学生创新创业教育计划专项 江西省2015年度研究生创新专项资金项目(YC2015-S416)资助
【分类号】：S156.6
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