光温耦合对日光温室番茄生长、产量与品质的影响

为研究根区温度与LED补光耦合对日光温室番茄生长发育的影响，试验设置了根区加温、2种光照强度与2种光质配比3因素裂区试验，另外设置了根区不加温与不补光对照，共10种组合处理。结果表明：根区加温与补光都能显著促进番茄的生长发育，提早番茄上市时期与提高番茄的营养品质，其中补光密度为40 μmol/(m2·s)更能显著提高番茄的生长与产量以及果实品质；而补光光质红蓝比为3:2时更能促进番茄生长以及提高番茄的产量，但光质红蓝比为1:1时，更有利于提早番茄果实前期转色日期，且能增加番茄果实的糖度。另外，根区加温与光强耦合相比于根区加温与光质耦合效应更能促进番茄生长以及提高番茄的产量。总体表明，根区加温与光密度为40 μmol/(m2·s)及光质为红蓝比3:2的耦合处理更符合日光温室番茄生产需要。

Effects of Light-temperature Coupling on Growth, Yield and Quality of Tomato in Solar Greenhouse

To study the effects of root zone temperature and light intensity coupling on growth and development of tomato in solar greenhouse, root zone heating, 2 light intensities and 2 light qualities for total 10 coupling treatments were set, including no root zone heating and no lighting treatments as CK. The results showed that: the root zone heating and supplemental lighting could promote the growth and development of tomatoes significantly and advanced the marketing time and promoted the nutritional quality; among them; the light intensity of 40 μmol/(m2·s) could significantly improve the growth and yield and the quality of fruit; and the value of light quality (red:blue 3:2) treatment could promote the growth and yield of tomato, however, when the light quality was red:blue 1:1, it was more favorable to an earlier coloring of the fruit, and could increase the sugar degree of the fruit. In addition, compared with the coupling of root zone heating and light quality, the coupling of root zone heating and light intensity could promote the growth and yield of tomato. In conclusion, the coupling of root zone heating and the light intensity of 40 μmol/(m2 · s) and the light quality of red:blue 3: 2 is in line with the production need of tomato in solar greenhouse.