Sand was the better cutting medium than perlite.
扦插基质山沙优于珍珠岩；
A good starting point is three parts mix to one part perlite.
可以试试用三份介质加一份珍珠岩混合。
It is possible that the filter-aids could be made from low grade diatomite and perlite;
认为低品位硅藻土和珍珠岩经过适当加工是可以制成合格助滤剂的；
It is possible that the filter-aids could be made from low grade diatomite and perlite;
认为低品位硅藻土和珍珠岩经过适当加工是可以制成合格助滤剂的；
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