钙素配方对弱光影响番茄幼苗质量的补偿作用

为防止设施番茄弱光生育障碍,提高设施番茄的耐弱光性,以钙素为主要元素研制出具有提高番茄产量和品质的复合配方。以普通栽培番茄品种辽园多丽为试材,在番茄六叶一心时选取长势一致的植株开始处理,弱光(427~516μmol/(m~2·s))胁迫下喷施3种钙素配方,以无遮光区植株和遮光区植株喷洒蒸馏水作对照进行钙素配方的筛选试验。结果表明:弱光胁迫下,钙素配方处理可降低番茄植株的株高,抑制植株徒长,提高番茄壮苗指数、耐弱光系数及SOD、POD、CAT等保护酶的活性,降低了膜质过氧化物丙二醛的含量,促进光合作用,提高了番茄的产量和品质。其中使用配方一(P1)处理的番茄植株其耐弱光系数与对照相比显著提高了23.6%,干物质积累和壮苗指数比弱光对照(CL)提高了39.0%和57.7%。可知,配方一(P1)在调控番茄耐弱光性方面的效果最佳。

Compensating Effects of Calcium Formulation on the Quality of Tomato Seedling under Low Light Stress

In order to prevent the fertility obstacle and improve the resistance to low light stress of tomato,the formulas mainly in the calcium element had been developed and screened which increased the yields and fruit quali ties.In this experiment the cultivated tomato cultivar Liaoyuanduoli as test materials,plants at the six-leaf stage were sprayed with an equal volume of calcium formulas by different times under low light condition,with sprayed distilled water in nature and low light (427-516 μmol/(m2·s)) as control.Results showed that formulas application reduced the adult plant's length and controlled the growth of plants,increased the seeding index and the activities of SOD,POD and CAT,reduced the MDA content of tomato leaves,and increased the fruit qualities and yields of tomato.The use of formula content of tomato leaves,and increased the fruit qualities and yields of tomato.The use of formula (P1) in tomato plants treated the weak light tolerance coefficient significantly increased 23.6％,the dry matter accumulation and seedling index than the weak light control (CL) increased by 39.0％ and 57.7％.The formula one (P1) in the control of the weak light resistance of tomato effect is the best.