中量元素 meaning in English

secondary element nutrient

Some secondary and micro - nutrients in myr are sometimes found to be deficient , these elements should also be given more attention in balanced fertilization program
在高产条件下，作物缺乏某些中量元素和微量元素的情况时有出现，在平衡施肥中也应予以充分注意。
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。