摘要
通过测定巨菌草不同种植方式和不同生长时期的农艺特征,分析其单丛和构件的数量特征、覆盖度和单丛构件的生长速度、构件生物量分配,并进行生物量模型预测,以探明巨菌草作为红壤侵蚀劣地植被恢复草种的可行性和其生物量模型预测的因子。结果表明:巨菌草可作为红壤侵蚀劣地植被恢复过程中的先锋植物,双节平埋种植更利于侵蚀劣地巨菌草生物量累积和覆盖度增加;以株高、基茎、覆盖度等易测因子作为巨菌草单丛或构件生物量的预测具有可行性。本文可为进一步研究巨菌草的生态可塑性和侵蚀劣地植被恢复提供参考依据。
By measuring the agronomic characteristics of Pennisetum giganteum in different planting patterns and different growth periods,the quantitative characteristics,coverage,growth rate,biomass allocation of single cluster and component were analyzed,and biomass model of P.giganteum were was predicted,so as to explore the feasibility of P.giganteum as a grass species for vegetation restoration in eroded inferior land of the red soil and its biomass model prediction.The results showed that P.giganteum could be used as a pioneer plant in the process of vegetation restoration in eroded inferior soil of red soil,and two-node flat-buried planting was more conducive to the biomass accumulation and coverage.It was feasible to predict the biomass of P.giganteum or component with easy measurement factors such as plant height,basal stem and coverage.This study can provide a reference basis for further research on the ecological plasticity of P.giganteum and the restoration of vegetation in erosive soil.
作者
沈发兴
蔡袁海
胡瑞
石芬芬
常梦琦
宋月君
莫明浩
Shen Faxing;Cai Yuanhai;Hu Rui;Shi Fenfen;Chang Mengqi;Song Yuejun;Mo Minghao(Jiangxi Provincial Key Laboratory of Soil Erosion and Prevention/Jiangxi Academy of Water Science and Engineering,Nanchang 330029,Jiangxi,China;College of Forestry,Jiangxi Agricultural University,Nanchang 330045,Jiangxi,China;Jiangxi Shanshui Technology Development Co.,Ltd.,Jiujiang 330499,Jiangxi,China)
出处
《山地农业生物学报》
2024年第3期69-75,84,共8页
Journal of Mountain Agriculture and Biology
基金
江西省水利厅科技项目(202325ZDKT02
202022TGKT09
202223TGKT05)
江西省土壤侵蚀与防治重点实验室开放研究基金项目(KFJJ202004)。
关键词
侵蚀劣地
巨菌草
植被恢复
构件
生物量拟合
eroded inferior land
Pennisetum giganteum
vegetation recovery
component
biomass fitting
