root eating insect是什么意思

用法例句

There were no report on whether cutting root influence salinity intake in afforestation in saline-alkali soils.

本研究在150 mmol NaCl处理的水培条件下,切断供试苗木的吸收根,通过检测叶被害率、蒸腾速率及苗木根、枝干和叶中Na+含量,进一步阐明蒸腾和Na+吸收对切根及NaCl处理的响应。

At the same time,test on seedling production with cutting root and apical bud was also conducted.

同时进行的切根和切根除梢育苗试验表明,切根明显促使牧豆苗产生侧根和须根,根系发育明显好于不切根苗;切根除梢比切根未除梢显著促进地径增粗及提高侧枝发生率。

Test on growing seedlings for Castanopsis fargesii by cutting roots and staining with ash was carried out then differences of a series of properties in quantity and quality such as percentage of adult nursery stock,height,diameter,main root,fibrous roots,branches,leaves and so on were analysed in this paper.

对丝栗栲切根与不切根育苗对比试验 ,分析不同处理的发芽率、苗高、地茎、主根、须根及枝、叶等到一系列苗木质量性状差异 ,表明切根能使丝栗栲苗木明显增高 ,枝叶增多 ,使苗木主根变短 ,侧根和须根发达 ,但切根在一定程度上降低了苗木的发芽率。

Design of structure and research on the system of root-cutting machine crank axle;

牧草切根机工作原理的分析与研究

Based on the theory analysis and the tests of working resistance of root cutting shovel,the authors gained the level of main technological parameters of root cutting shovel;the authors also studied on the arrangement of raking film tooth,the results indicated that the array of raking f.

对切根铲工作阻力进行了理论分析,并通过试验获得主要技术参数;同时,搂膜齿排列试验结果表明,搂膜齿的排列方式对搂膜率有一定的影响,最后一排的齿密度越大效果越好,但排列过密容易壅土,齿间距最小约为110 mm;通过综合试验,确定了悬挂式棉秆粉碎还田搂膜机的主要技术参数的较优水平组合;切根铲工作深度H为4～5 cm、提升角(或碎土角)β为16°、机具前进速度V为6。

At the same time,test on seedling production with cutting root and apical bud was also conducted.

同时进行的切根和切根除梢育苗试验表明,切根明显促使牧豆苗产生侧根和须根,根系发育明显好于不切根苗;切根除梢比切根未除梢显著促进地径增粗及提高侧枝发生率。

In this paper, experiment of Mongolian scotch pine indicates that quality of root cutted seedlings is better than those of transplant and non transplant.

对樟子松进行切根育苗试验，结果表明，机械切根苗苗木质量优于移植苗和留床苗。