不同浓度营养液对番茄无土栽培幼苗生长的影响

为研究不同浓度营养液对番茄幼苗生长的影响,以ND1558番茄为供试材料,以Hoagland-Arnon配方工作液为标准浓度(1.0C),设置6个营养液浓度(0.5C、2.5C、5.0C、7.5C、10.0C、12.5C)对番茄幼苗进行处理。结果表明:5.0C以下浓度对番茄幼苗抑制作用不明显;10.0C以上浓度处理的番茄幼苗抑制作用明显,但是定植后难以恢复生长;对幼苗株型调控较佳的组合为先用7.5C的营养液处理、再恢复正常浓度,该处理对番茄后期长势及产量有一定的促进作用。

Effects of Different Concentrations of Nutrient Solution on the Growth of Tomato Seedlings

Abstract: In order to study the effect of different concentrations of nutrient solution on the tomato seedlings growth, ''ND1558'' tomato was used as the test material, the working liquid of Hoagland-Arnon was used as the standard concentration (1.0C) and 6 nutrient solution concentrations (0.5C, 2.5C, 5.0C, 7.5C, 10.0C, 12.5C) were set to treat tomato seedlings. The results showed that below the 5.0C concentration of tomato seedling, inhibitory effect was not obvious. The inhibitory effect was remarkable that above the 10.0C concentration processing tomato seedlings, but it was difficult to restore growth after engraftment. The better combination of plant type control was treated with 7.5C nutrient solution, f irstly and then with normal concentration, which had a definite effect on the growth and yield in the later period.