不同密度对密闭型育苗设施中番茄幼苗生长的动态影响

以番茄中杂9号为试材，利用不同规格穴盘研究不同密度对密闭型育苗设施中番茄幼苗个体及群体生长的动态影响。结果表明：出苗后第13天时，各处理番茄幼苗生长发育正常，而出苗16 d后200孔和288孔处理的番茄幼苗遮光严重，不适于培育更长苗龄的番茄幼苗，此时番茄幼苗2片真叶，株高5.5 cm左右，茎粗2 mm左右|128孔处理的番茄幼苗在第23天时出现较严重的遮挡现象，72孔处理仍存在空隙，若培育更长苗龄的番茄幼苗可选用72孔或穴孔面积更大的穴盘，此时番茄幼苗4片真叶，株高14 cm左右，茎粗3.5 mm左右。

Dynamic Effects of Different Density on Growth of Tomato Seedling in Plant Factory

The experiment was carried out with different specifications plug（72 caves，128 caves，200 caves，288 caves）to study the dynamic effects of different densities on tomato（Lycopersicon esculentum Mill.）individual and group growth in plant factory．The results indicated that the tomato seedlings of different densities have normal development on the 13th day，but the individuals at plug with 200 and 288 caves were shaded heavily by each other from the beginning of the 16th day．So the plug of 200 and 288 caves are not appropriate for larger size tomato seedlings．The stem length of the seedlings which have 2 leaves is about 5.5 cm and the stem diameter is about 2 mm．It is until the 23rd day when the plug with 128 caves the seedlings are heavily shaded by each other，while the plug with 72 caves still have some spaces．The stem length of the seedlings which have 4 leaves is about 14 cm and the stem diameter is about 3.5 mm so far．