| 陆欣春,郑永照,陈旭,韩晓增,邹文秀,董本春,严君.施生物炭与有机肥对白浆土土壤酶活性的影响[J].农业环境科学学报,2022,41(3):568-574. |
| 施生物炭与有机肥对白浆土土壤酶活性的影响 |
| Effects of biochar application and organic fertilizer on the enzymatic activity in Albic soil |
| 投稿时间：2021-02-09 |
| DOI：10.11654/jaes.2021-0169 |
| 中文关键词: 白浆土 生物炭 有机肥 产量 土壤酶活性 |
| 英文关键词: Albic soil biochar organic fertilizer yield soil enzymatic activity |
| 基金项目:国家重点研发计划项目(2017YFD0300605);黑龙江省应用技术研究与开发计划项目(GA19B105,GA19B101);国家自然科学基金项目(41771327,41807085) |
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| 中文摘要: |
| 为探讨施生物炭和有机肥对白浆土土壤酶活性的影响，以白浆土为试验土壤进行施生物炭（C1：施生物炭15000kg·hm-2、C2：施生物炭30 000 kg·hm-2）与有机肥（OM）的定位试验，监测施用后3 a肥效，采集土壤测定β-1,4-葡萄糖苷酶（BG）、β-1,4-N-乙酰葡糖氨糖苷酶（NAG）、亮氨酸氨基肽酶（LAP）、酸性磷酸酶（AP）活性。结果表明，在白浆土上施生物炭和有机肥连续3 a均增加了玉米产量，但从经济效益分析施生物炭仍为负效益，施有机肥为正效益。3 a后仅C2显著增加了有机质含量，其他处理下有机质和全氮含量增加均不显著。与常规处理相比，C1仅显著提高了BG酶活性，提高了82.2%，对其他3种酶活性提高均不显著，C2可显著提高4种酶活性23.1%~47.9%；施有机肥可显著提高AP和LAP酶活性。施生物炭30 000 kg·hm-2对白浆土土壤改良效果较好，其后效可维持3a以上，但经济效益仍为负。因此实际生产中还应以施用有机肥培肥土壤为重，对于出现严重减产的地块可以考虑通过施用生物炭一次性改良土壤。 |
| 英文摘要: |
| This study conducted an experiment in northeast China designed to better understand the influence of biochar and organic fertilizer application on enzymatic activity in Albic soil. The effects of biochar(C1, 15 000 kg·hm-2 and C2, 30 000 kg·hm-2) and organic fertilizer(OM) application on β-1,4-glucosidase(BG), β-1,4-N-acetylglucosaminidase(NAG), leucine amino glucosidase(LAP), and acid phosphatase(AP) relating to carbon, nitrogen, and phosphorus cycling on Albic soil were investigated. The results showed that the maize yield increased following the application of biochar and organic fertilizer for three consecutive years; however, the application of the former had a negative impact in terms of economic benefits. Significant increases to the soil organic matter and total nitrogen content were only observed in the C2 treatments. Compared with the control treatment, BG enzyme activity significantly increased by 82.2% in the C1 treatment, and all four enzyme activities were significantly increased by 23.1%~47.9% in the C2 treatment. The treatment with organic fertilizer application was found to significantly increase AP and LAP enzymatic activities. The results showed that the most effective means to improve Albic soils was biochar application of 30 000 kg·hm-2; its subsequent effects might be maintained for >3 a, while attention should be directed toward the resultant negative economic benefits. Therefore, organic fertilizer should be considered a priority to improve soil fertility in Albic soils, and a one-time biochar application should be considered for plots characterized by severe reductions in yield. |
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