不同复合基质对番茄育苗的影响

he experience studies 8 different substrate ,such as pearlite ,vermiculite , perlite, ,coconut husk and so on, ,which has an effect on culturing plant of tomatoes with different ratio . The result showed that different ratio of substrate ,which is respectively 5% and 1% level ,has an different effect on the seedlings growth,such as width of seedlings ,the number of leaves ,highth of plants,fresh weighth of above-ground and under-ground and vitality of root system and so on..there is wonderful quality of appearance in the coconut husk substrate ,which especially is the best with the ratio T8（V peat：Vvermiculite：Vcoconut husk=4：2：3）.but the quality of appearance reduces obviously in the substrate of slag ,even the leaves turns yellow,it is the worst with the ratio T7（Vpeat：Vvermiculite：Vperlite：Vslag=4：3：3：1）,which is not suitable for culturing plant of tomatoes.