fully mix
加最初的几滴时要很慢，且要充分混匀，以防止反应过快。
Add the first few drops very slowly with sufficient mixing, in order to prevent a rapid reaction.
youdao
该肥与土壤充分混匀后，氮素溶释率相对降低，降低最大程度为11 3%。
When mixed fully with soil, relatively can lower the rate of nitrogen release. The lowered maximum degree is 11 3%.
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