大量元素 meaning in English
macroelement
macromineral
major element
Examples
- The suitable nutrient solution formula was calculated according to the water quality in beijing
根据对主要大量元素的实际吸收情况，推算网纹甜瓜合适的营养液配方。 - On one hand fertilizer rate must be in accordance with soil fertility and crop ' s nutrient property ; on the other application should abide by the principle of combining the organic manure with inorganic nutrients and primary with secondary and micro - nutrients
一方面施肥量必须与土壤肥力和作物养分特征一致；另一方面应当有机肥与无机养分配合施用，大量元素、中量元素和微量元素配合施用。 - The results are mainly as follows : sticky quality , tuber structure , the loose and tense degree , unit weight , ph value ( decreases in the few conditons that resulting acidity strengthening ) , alkalinity increases in the same soil level , root quantity and macro - element content decreases ; there has a extraordinary difference between k , ca and mg , especially for pb and cd which shows that the collecting function of soil enhances under the disturbence conditon , and other micro - elements , such as zn > mn , cu , ni get decreasing . tourism activity is one of the key reasons for water body pollution . to different recreation types , the pollution degree has the obvious difference
各景观区所取样点中，土壤理化性旅游破坏区所受影响最大，呈现出质地粘重、结构变差(以块状为主) 、同一层次土壤松紧度增大、根系变少、容重增大、土壤ph值增大(也有个别ph减少，以致酸性增强) 、碱性增强、大量元素降低，其中对k 、 ca 、 mg影响中有显著性的差异(又以游道类影响最为显著) 、重金属元素( pb和cd )明显增多、显著性的差异最为明显，其它微量元素( zn 、 mn 、 cu 、 ni )逐渐减少，表明旅游活动干扰后土壤对pb和cd富集作用增强等特点。