碘对樱桃番茄开花结果和产量的影响

在深液流水培的营养液中添加不同浓度的碘离子(I-)作为处理,研究碘对樱桃番茄开花结果和产量的影响。结果表明:碘处理的植株第3～5花序的着生节位分别比对照低2～3个节位;2.0mg.L-1碘处理和高浓度(5.0～6.0mg.L-1)碘处理的果实比对照提前5～8d成熟;1.0～4.0mg.L-1碘处理的坐果率与对照均无显著差异,而高浓度(5.0～6.0mg.L-1)碘处理的坐果率显著低于对照;低浓度(1.0～2.0mg.L-1)碘处理的花数、果数和产量均显著高于对照,而高浓度(5.0～6.0mg.L-1)碘处理的产量则显著低于对照;单果质量随着碘处理浓度的增高而降低,但是1.0～3.0mg.L-1碘处理与对照差异不显著。综合以上结果,在樱桃番茄栽培上以1.0～2.0mg.L-1的碘离子供给浓度最适宜。

Effect of Iodine on Flowering,Bearing and Yield of Cherry Tomato

In controlled condition of deep flow hydroponics,the experiment studied the effect of iodine on flowering,bearing and yield of cherry tomato(Lycopersicon esculentum var.cerasiforme)treated with solutions of different iodide(I-)concentrations.After I- treatments,the node order of inflorescence,from the 3rd to the 5th,was 2-3 nodes lower than that of the CK.The fruit of plants treated in solutions with I- concentration of 2.0 mg·L^-1 and high I- concentration(5.0-6.0 mg·L^-1)ripened 5-8 days ahead of the CK.With respect to fruit setting rate,there was no significant difference between those plants treated with I- concentration of 1.0-4.0 mg·L^-1 and the CK;but for plants treated with high I- concentration(5.0-6.0 mg·L^-1),it was significantly lower than the CK.The flower number,fruit number and yield with low I- concentration treatment(1.0-2.0 mg·L^-1)were significantly larger than the CK,while the yield of plants treated with high I- concentration(5.0-6.0 mg·L^-1)was significantly lower than the CK.Fruit weight decreased with the increase of I- concentration in solutions,but there was no significant difference between those treated with I- concentration of 1.0-3.0 mg·L^-1 and the CK.To summarize these results,it can be concluded that the optimal I- concentration provided for cherry tomato growth should be 1.0-2.0 mg·L^-1.