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＋是对海洋底栖无脊椎动物幼虫诱导普遍有效的无机寓子。本文探讨了Ｋ＋对红海胆等９种海胆的变态诱导效果，分析了其安全使用浓度、处理时间等技术。对有关因子对变态串的影响进行了对比。
+ Is a generally effective inorganic assortment induced by marine benthic invertebrate larvae. In this paper, we discussed the effect of K + on the metamorphosis of 9 kinds of sea urchins, such as red sea urchin, and analyzed their safe use concentration and treatment time. The impact of the factors on the metamorphosis was compared.