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试验表明,用中粗砂(<0.5 mm 的颗粒含量为59%)的对照,作物产量高;中砂(<0.5 mm 的颗粒含量达70%)和粗砂(<0.5 mm 的颗粒含量小于34%)处理,产量低于对照的10%以上;珍珠岩加粗砂物理性好,产量接近对照,是较理想的基质;未经发酵的锯末不适于作为基质;颗粒大小组成适当,含物理性粘粒很少的河砂可以不用水洗。
Experiments showed that the crop yields were high with a medium-coarse sand (<0.5 mm pellet content of 59%); medium sand (<0.5 mm pellet content up to 70%) and coarse sand (<0.5 mm pellet content less than 34 %), Yield less than 10% of the control; perlite coarse sand physical good, yield close to the control, is an ideal substrate; unfermented sawdust is not suitable as a substrate; particle size composition appropriate, with physical Sand with little clay can be washed without water.