地径 meaning in English
ground diameter
Examples
- The results showed that the ground diameter ( d ) and the nursery height ( h ) could he regarded as the indexes of the seedlings quality grading of zanthxyhum planisnum var . dingtanenesis
结果表明，地径( d )和苗高( h )对顶坛花椒苗木质量有很好的表达，可以作为苗木分级的质量指标。 - The above - ground biomass amount is between 11 . 81 - 109 . 15t / hm2 . s . viciifolia hance has good funcjtion for soil and water conservation . at present , it is on the frontal stage of natural vegetation succession , the ground - diameter is keeping linear growth
狼牙刺个体地径随年龄增长保持直线生长，立地条件的优劣对生长速度有重要影响，生长速度顺序为： 14龄狼牙刺6龄狼牙刺17龄狼牙刺。 - The sowing and seedling raising experiments of castanopsis hystrix seed with different artificial treatments showed 1 - year - old c . hystrix seedling average height and average dbh with the treatments of hastening germination and cutting root were 22 . 0 % and 117 . 0 % higher than those without the root cutting treatment , respectively , the individual - tree lateral root number increased by 127 . 71 % , the afforested survival rate increased by 23 . 0 %
摘要对红锥种子采用不同人工处理的播种育苗试验表明：红锥种子经催芽断根育苗处理后，其1年生苗木平均高和平均地径分别比无断根处理的高22 . 0 %和117 . 0 %单株侧根数增加127 . 71 % ，造林成活率提高23 . 0 % 。 - This article uses fixation swatch founding for second - class investigation to obtain character of 207 sample trees , by which mathematics model of ground diameter volume table of chinese fir were deduced by regressing and imitating with five of equations respectively , and used unitary and binary volume tables of timber respectively to reckon an unitary ground diameter volume table , then compared the two ground diameter volume tables , so that a ground diameter volume table of chinese fir in yanping district was compilated to satisfy essentially the precision demand of forestry production , and to serve forestry production
摘要利用二类调查布设的固定样地，收集207株样木调查资料，分别采用5个方程进行回归拟合，选出杉木人工林地径材积表的方程模型，利用一元材积表和二元材积表导算编制一元地径材积表，并进行比较，结果表明二元材积表导算地径材积表的方法精度较高，基本满足林业生产所需精度要求，可以提供林业生产服务。 - After rain , the soil water content is higher , while no rain , the soil water content decreases faster relatively . in autumn , the soil water content begins to drop , but the drop range is small than summer . during continual d rought , the soil water content of surface layer approaches to that of middle layer and under layer ; water conservation measures can increase chestnut ' s new branch remarkably , results difference among water conservation measures are not significant , meanwhile , water cons
而在持续干旱期，表层土壤的含水量接近于中下层土壤的含水量;保水措施能使新梢明显增长，而保水措施之间的效果差异不明显;同时保水措施并不能使新梢直径明显增粗;保水措施对成龄板栗树根茎地径的增粗生长影响不大;综合以上试验结果，秸秆覆盖为太行山片麻岩区的最佳的保水措施，地膜覆盖其次。