The soil nutrient index calculated from bacterial population indicated that the nutrient levels of the four grass-forest systems were very low, only between 0.003 and 0.014.
根据微生物数量计算的土壤营养指数表明，4种草林系统的营养级别都极低，土壤营养指数仅0.003~0.014。
Soil nutrient index of 6 different utilization patterns in research area was measured. Significance of difference and soil nutrient level in different utilization patterns were comparatively analyzed.
通过对研究区6种不同利用模式下土壤养分指标的测定，对比分析出各利用模式间土壤养分含量水平和差异显著性。
The results showed that the comprehensive index of the seawater nutrient condition was less than 1 and seawater quality was in poor condition.
结果表明：大鹏湾养殖区各监测站位的海水营养状态综合指数均小于1，属于贫营养型海区。
Differentiation of a variety of forage with minor nutrient discrepancy by using GI can indicate that GI is an authoritative index evaluating forage quality.
使用GI值能明显区分养分含量差异很小的不同种类牧草，这说明分级指数是评价牧草营养价值的最权威指标。
The comprehensive accumulative index of nutrient elements was about 35% in the substrate sludge.
底质中营养元素综合累积指数在35%左右。
The tropical mountain rain forest located at mid-high altitude with slight anthropogenic disturbance had the highest soil nutrient-holding capacity and integrated soil quality index.
位于中、高海拔，人为干扰最轻的山地雨林原始林具有最好的土壤养分保持能力，土壤综合质量指数最高。
The result showed that the homogeneous degree of the soil nutrient was increased, the variability of spectral index and the yield were reduced in the management zone divided by soil data.
结果表明，利用土壤养分和光谱数据划分的管理分区内，各土壤养分的均一度得到了提高，光谱指数和产量的变异系数普遍降低。
Effect of nutrient solution hypoxia stress on growth index, photosynthesis of muskmelon seedlings were studied in this paper.
在水培条件下，研究了营养液低氧胁迫对网纹甜瓜幼苗生长指标、光合作用和生理代谢物质含量的影响。
The index is characterized by product of two functions of nutrient-N that is the most active factor in the system.
该指数是以系统内最活跃的因素养分N的两个函数乘积来表征。
The soil types, their distribution and their basic properties were presented. The soil nutrient levels were evaluated by means of the fuzzy comprehensive index (FCI).
本文概述了神府煤田在柳塔镇辖区内的土壤类型及其分布和土壤的基本理化性质。
The soil types, their distribution and their basic properties were presented. The soil nutrient levels were evaluated by means of the fuzzy comprehensive index (FCI).
本文概述了神府煤田在柳塔镇辖区内的土壤类型及其分布和土壤的基本理化性质。
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