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- Low soil boron content 低硼
- It would be toxicity when the concentration of soil boron was higher, whereas North454 has a relative broader suitable extent. North384 is a genotype which is not sensitive to low soil boron and had a broad suitable extent. 北454需硼的适量范围较宽:北384属于既对低硼不敏感、适量需硼范围又很宽的基因型。
- It is very stable, particularly in glazes with a low lead and boron content. 它的稳定性特佳,特别用在含低铅及硼的釉料中。
- Under low soil moisture condition,evaporation from the community decreased with increase in soil clay content. (2)在低土壤含水量条件下,群落蒸发随土壤粘粒含量增加呈线性降低;
- Boron content of SiC/ B powder depends on the kind of boron sources and its quantity. 粉末中硼的含量取决于硼源的种类和用量。
- The influence of heavy metal and Boron on the invertase, urease and catalase of soil Boron tailing pond in Dandong Kuandian of Liaoning province were investigated. 本文研究辽宁省宽甸硼矿区尾矿库重金属及硼污染对土壤转化酶、脲酶和过氧化氢酶的活性影响。
- This method is used for the measurement of the boron content in the cooling water of diesel locomotives with a good selectivity, a high sensivity, and easy and fast operation. 本方法应用于内燃机车冷却水中硼含量的测定,其选择性好,灵敏度高,操作简便、快速。
- The carbon nanotube was digested by a chemical method, and the Boron content was determined by ICP-AES.The recovery ratio obtained by adding standard Boron sample was 101.9%. 摘要采用化学方法对碳纳米管进行消解,并用ICP-AES法对硼元素含量进行测定,硼元素的回收率为101.;9%25。
- Low soil fertility has slowed agricultural production in parts of the continent for years. 土壤的低肥力使这块大陆的许多地方的农产品在逐年递减。
- The effects of boron content and heat treatment to the hardness and the impact toughness have been surveyed and the pin-on-disk test has been performed. 考察了加硼量和热处理工艺对高铬铸铁的硬度和冲击韧性的影响,并进行了销盘磨损试验。
- However, there are also some problems, such as the low soil fertility and secondary soil salinization. 但也面临着土壤肥力低、次生盐渍化威胁大等问题。
- The experiment and results of measurement of boron content in boric acid mother liquor by direct coloring colorimetric method of aqueous phase are reported. 报道了笔者用水相直接显色型比色法测定硼酸母液中硼含量的实验和结果。
- Temperature, especially where low soil temperature may reduce available soil K and its absorption by plants. 温度,尤其是当土温低,可能减少土壤有效钾和植物对其吸收的地方。
- Top soil masses of dam slope soak and produce wetting more easily than low soil of slope in spite of rainfall intensity. 不管降雨强度如何,坝顶和坝坡中上部比坡体的中下部更容易受降雨浸湿。
- Microbial fixation of nitrogen occurred strongly in U+S treatment due to its higher C/N,which resulted in lower soil NO -N content compared with CK. 而尿素与麦秸混施后则发生强烈的矿质氮固持作用,土壤中的NO-N甚至低于未施肥处理。
- With the increasing of nitrogen rate, the curves of RVA profile decreased under the high, middle and low soil fertility levels. 两供试品种在高、中、低三种地力水平上,RVA谱曲线均随施氮量的增加而降低。
- The result shows with increase of the boron content in Fe-B alloy,the size of the scanned tracks became larger and the tendency of spheroid decreases.The surface roughness of the samples became worse. 结果表明,随着硼含量的增加,试样组织的凝固颗粒尺寸增大而球化倾向降低,试样的表面粗糙度变差;
- For example.The boron uptake in one million cells, The percentage of boron content in organelle (mitochondria, lysosomes, endoplasimic reticulum and cytoplasm) during every stages. 例如:百万细胞中硼的含量,各时期细胞器(粒腺体、溶解体、细胞核、内质网及细胞质)中硼含量的百分比,利用测得的数据进行模拟后可以判别何种药物的潜在效力最佳。
- Effect of Soil Boron Toxicity to Wheat Growth 土壤硼毒对小麦生长的影响
- Determination of Boron Content in Soil and Fertilizer by ICP AES ICP-AES法测定土壤及肥料中的硼含量