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The study was aimed to select suitable substrate formulations for seedling of Hainan cherry tomato rootstocks. Variety Haiqiezhen No.1 was used, and fermented cow dung, coconut husk, and commercial seedling substrate were made into eight substrate formulations according to different volume ratios, and commercial seedling substrate was used as the control (CK). The physicochemical properties of different seedling substrates and the effects on the growth and physiological characteristics of rootstock seedlings were investigated. The bulk density and aeration porosity of the seedling substrates with coconut busk and cow dung were lower than that of CK, while the total porosity, water-holding porosity, pH and EC were higher than that of CK. The nutrient contents of the treatments were basically higher than that of CK, and the differences reached a highly significant level. The emergence rate of each treatment was more than 90%, which was highly significantly higher than that of CK (except T8). With the prolongation of seedling growth period, the plant height and stem diameter also increased, and there were large differences among different treatments. T2 and T4 were better than other treatments. Fresh and dry weight of the whole plant, above-ground and below-ground dry weights, and strong seedling index also increased with the addition of coconut busk and cow dung (except T5 and T6). The best treatment was T4, and the strong seedling index reached 0.106, which was significantly higher than that of CK, and improved 36.05% compared with that of CK. Different seedling substrates had little effect on the main root length of seedlings, which could promote the increase of average root diameter, root surface area and root volume, but the root vigour was extremely significantly lower than that of CK. The comprehensive evaluation of principal components was T4>T3>T2>T6>T7>T5>T8>T1>CK. In summary, T4 had optimum formula on Haiqiezhen No.1.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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