| The adaptability of the seedling of vegetations to stover substrates and the practicality of stover substrates were studied in this paper. Shenqie No.1, Jili No. 10, Jilindafen 115 as experimental materials, the physical & chemical characters of the substrate and the development, physical & chemical indexes and anatomic structures of the vegetations growing in stover substrate , as well as the yield and quality of their fruits, were studied. This experiment was divided into 6 treatments: No.l is 'stover : soil = 2:8'; No.2 'stover : soil = 3 : 7'; No.3 'stover : soil = 4:6'; No.4 'stover : soil = 5:5'; No.5 'turf: soil = 3:7'; No.6 'horse dung : soil = 3:7'. K2SO4 (0.5 kg/m3), NH4H2PO4 (0.5 kg/m3) and urea (1.0 kg/m3) were delivered in each treatment.The physical & chemical characters of the substrate affected the growth of seedlings. In this experiment, the fluctuation of Bulk density was between 0.50g/m3 and 0.85g/m3, that of porosity between 0.45 and 0.65, and that of pH between 6.0 and 7.5. In each treatment, the content of nutrient elements in the later period was less than that in the early period. In the No.2 treatment of eggplants, the assimilations of N and K reached to the highest points as 28.6% and 45.5%. In the No.3 treatment of sweets pepper, the assimilations of N, P and K reached to the highest points as 18.9%, 33.3% and 41.9%. When the contents of N, P and K went down, the assimilating ability would rise and their growth would be better; if that contents were too high and the nutrient elements were over-accumulated, the growth of them would be worse and their resistances were low too. Because of the source complexity of substrates, the law was not obvious.The results showed that the adaptabilities of the three kinds of vegetations were changing according to the differences of substrates. In the period of seedlings, tomatoes and eggplants grew best in the No.2 treatment; sweet peppers grew best in the No.3 treatment. But in the No.4 treatment, all the above ones grew badly; and compared with the substrates with turf or horse dung, the differences were obvious.In the aspect of anatomic structures, in 1mm2 field of vision, eggplants' vessel diameters of stems and their vessel number were 439 that was just less than that in treatment 4; magnified by 160 times, the cortex thickness reached to the highest value as 2.6cm in treatment 2. Comprehensively, eggplant stems developed best in treatment 2. In treatmet 3, the vessel diameters of sweet peppers leaves reached to the highestvalue as 18.5 u m and their number was 46 that was just less than that in treatment 5 and 1;In the aspect of the strength indexes of seedlings, eggplants and tomatoes reached to the highest value as 0.225 and 0.115 in treatment 2; sweet peppers reached to the highest value as 0.460 in treatment 3.In aspect of photosynthetic characters, the photosynthetic rate of eggplant in treatment 2 was 9.53 u mol CO2.m-2.s-1, which was only lower than treatment 5 (10.61 u mol CO2.m-2.s-1); the transpiration rate of treatment 5 was comparatively high as 2.26mmol-m-2.s-1, but that of treatment 2 was just 1.71mmol.m-2.s-1. Comprehensively, treatment 2 was better than the others, and tomatoes were fit for growing in treatment 2 as the same; but sweet peppers were growing better in treatment 3 than in the others. The photosynthetic rate of treatment 3 (5.31u mol CO2.m-2.s-1) was just lower than that of treatment 5 (63.1 u mol CO2.m-2.s-1); the intercellular CO2 concentration of treatment 3 was just lower than that of treatment 5 and 6; but the transpiration rate of treatment 3 (0.433 mmol.m-2.s-1) was much lower than that of treatment 5 (0.985 mmol.m-2.s-1); water utilization ratio of treatment 3 was more than one time as high as that of treatment 5.In the aspect of resistance, eggplants reached to the highest point in the No.2 treatment.In the aspect of yield, the total yield and the mean weight of berries of eggplants reached to the highest points as 7844.20 kg/667 m2 and 0.113 kg.From the above results, it is practical to use i...
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