施肥对巨龙竹实生苗土壤质量和生物量的影响

周昀菲; 辉朝茂; 刘蔚漪

doi:10.12390/jbr2022043

施肥对巨龙竹实生苗土壤质量和生物量的影响

doi: 10.12390/jbr2022043

西南林业大学竹藤科学研究院/国家丛生竹工程技术研究中心, 云南昆明 650224

基金项目:

国家重点研发计划(2021YFD2200501)；云南省基础研究专项(202201AT070053)；“云南滇南竹林生态系统定位观测研究站”监测经费(2022-YN-15)

详细信息

作者简介:
周昀菲,硕士研究生。E-mail:1255623163@qq.com。

通讯作者:
刘蔚漪,讲师,博士,从事竹藤培育、生态研究。E-mail:weiyiliu651@126.com

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出版历程
- 收稿日期: 2022-03-06
- 刊出日期: 2022-05-27

Effects of Fertilization on Soil Quality and Biomass of Bamboo (Dendrocalamus sinicus) Seedlings

Institute of Bamboo and Rattan/Sympodial Bamboos Technological and Engineering Research Center, Southwest Forestry University, Kunming 650224, Yunnan, China

摘要

摘要: 研究共设置4种不同施肥处理，探讨其对巨龙竹实生苗土壤养分、土壤酶活性与微生物数量以及幼苗生长的影响。施肥处理为无机肥1(A：氮、磷、钾比例22∶8∶15，总有效养分含量≥45%)；无机肥2(B：氮、磷、钾比例16∶16∶16，总有效养分含量≥48%)；有机肥(C：鸽子粪发酵)、绿肥(D：光叶紫花苕)；不施肥对照：CK。结果表明：各施肥处理的土壤养分、酶活性、微生物数量和生物量均高于对照处理，C处理均为最高。土壤养分与真菌、固氮菌和地上生物量呈现正相关，与细菌、放线菌呈现负相关。巨龙竹地上生物量与土壤养分、过氧化氢酶、酸性磷酸酶、脲酶、真菌、固氮菌呈现正相关，与细菌、放线菌呈现负相关，枝鲜重与水解性氮、真菌达到极显著(P＜0.01)，与全氮、全磷、有效磷、固氮菌达到显著(P＜0.05)，秆鲜重与酸性磷酸酶达到显著。总体而言，土壤质量综合评分值排名得C＞D＞B＞A＞CK，施肥种类对土壤质量的影响为处理C最佳，处理A最弱。
- 巨龙竹 /
- 土壤质量 /
- 施肥 /
- 生物量 /
- 酶活性 /
- 微生物
Abstract: Five different fertilizer treatments were applied to investigate their effects on soil nutrients,soil enzyme activities,soil microbial populations and growth of Dendrocalamus sinicus seedlings. The fertilizer recipes were as follows:inorganic fertilizer 1 (A:N-P-K ratio of 22:8:15 and total effective nutrient content ≥ 45%);inorganic fertilizer 2 (B:N-P-K ratio of 16:16:16 and total effective nutrient content ≥ 48%);organic fertilizer (C:fermented pigeon manure);green manure (D:Vicia villosacv.varglabrescens);and no fertilization control:CK. The results showed that soil nutrients,soil enzyme activities,soil microbial populations and plant biomass under all fertilizer treatments were higher than those in control group,with data in C being the highest among all treatments. Soil nutrients were positively correlated with fungi,nitrogen-fixing bacteria and above-ground biomass,and negatively correlated with bacteria and actinomycetes. The above-ground biomass of bamboo seedlings demonstrated positive correlations with soil nutrients,catalase,acid phosphatase,urease,fungi and nitrogen-fixing bacteria,and negative correlations with bacteria and actinomycetes. The correlations between branch fresh weight and hydrolysable nitrogen and fungi were highly significant (P<0.01),and the correlations between branch fresh weight and total nitrogen,total phosphorus,available phosphorus and nitrogen-fixing bacteria were significant (P<0.05). The correlation between culm fresh weight and acid phosphatase was significant. In general,the soil quality was ranked as C>D>B>A>CK,and treatment C had the largest positive impact on soil quality while the effect of treatment A was weakest.
- Dendrocalamus sinicus /
- Soil quality /
- Fertilization /
- Biomass /
- Enzyme activity /
- Microorganism

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