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- root biomass regression method 根生物量外推法
- Root biomass of winter wheat in 0~30 cm and 0~100 cm soil layers was studied using root core and dig sampling method. 用挖坑冲洗法和改良根钻法研究了耕层(0~30cm)和1m土体内冬小麦根系生物量及其空间分布。
- Step-wised regression method was employed to analyze the data. 采用多元逐步回归的方法进行数据分析。
- Its results are compared with that of the least squared regression method. 还与最小二乘回归的预测结果进行了误差分析。
- S ratio (belowground to aboveground biomass ratio) has been widely used for estimating root biomass. 利用根冠比(R:S)和地上生物量来估算地下生物量是目前常用的方法,但目前缺乏根冠比的数据。
- Correlation between number of cellulolytic microbe and root biomass was not detected. 细菌和纤维素分解菌数量与根系呼吸显著正相关;
- There were significant difference in root biomass and dry matter among different desertification levels (SLD, MD, SD, and VSD). 地下根系生物量也呈显著下降的趋势。
- Multivariate regression method for determining particle efficiency of deoil-hydrocyclone. 测定除油旋流器粒级效率的多元回归法。
- The contents of pyramidon and caffeine in Naoqing Pian were determinedby a multi - wavelength linear regression method. 本文采用多波长直线回归法测定脑清片中氨基比林和咖啡因的含量。
- The variety of Baici with low N efficiency had a decreased root biomass compared to other genotypes under N stress condition in the two light intensity. 在不同光照水平低氮胁迫时,氮低效品种白瓷与其它三个品种相比,根系的形态指标均有不同程度的降低。
- Tests show that the application of the regression method to qualitative and quantitative interpretation is feasible. 检验结果说明,用回归分析方法对测井资料作定性、定量解释是可行的;
- Shoot and root biomass of white maize and black maize significantly decreased in Cd and pyrene contaminated soil than that in uncontaminated soil, especially for root biomass. 这种毒害效应多环芳烃和重金属的复合作用比其单独作用要强烈很多[12]。
- The model used multiple stepwise regression method and back propagation method independently. 模型分别采用多元逐步回归方法和反向传播方法。
- So we introduced and used quantile regression method, which was robust in this situation. 同时,根据以往研究经验知道,模型可能存在内生性问题,因此,本文将所有模型在所有数据集上进行内生性检验,并且首先估计不存在内生性的模型。
- Multivariate stepwise regression method is applied in the study area for the first time. 有效的提取地层孔隙度等参数,从砂体中识别出储层并建立气水干层识别标准。
- We found that roots biomass increased but the ratio of root to shoot decrease with successional stage extend. 一般来说,根系的垂直分布是较浅的,尤其是细根。
- Logistic regression method has the best performance in AERE typhoon induced debris flow susceptibility analysis. 总体而言罗吉斯迴归得到最好的判释结果。
- The kernel regression method now is the most popular non-parametric estimation method. 核回归方法是比较常用的一种非参数估计方法。
- Further more, the research of root biomass and its distribution in succession can provide the new theoretic bases for forest dynamics, also maybe the one focus of the belowground ecology. 在演替过程中,根系生物量及其分布动态的研究,可以为森林群落动态学提供新的理论基础,是未来地下生态学研究的焦点之一。
- Assay of naoning pian was reported by multi wavelength linear regression method in this paper. 本文采用多波长线性回归法测定脑宁片的含量。