Ca^(2+)处理对岩报春在北京温室越夏栽培的影响

Effects of Ca2+ on Cultivating During Summer of Primula saxatilis in Greenhouse of Beijing

为提高岩报春植物在北京地区夏季的耐热性,从5月30日开始,分别向其待测植株叶表面喷施CaCl2溶液,每隔3 d喷施1次,浓度梯度为5、10、20 mmol/L。每隔15 d测定1次岩报春植株的形态指标和生理指标,试验进行到8月30日。结果表明:低浓度CaCl2溶液(5 mmol/L)施用比高浓度CaCl2溶液(10、20 mmol/L)施用更能增强岩报春植株耐热性,使其能在北京温室顺利越夏。

From May the 30th, Primula sa：ratilis were dealt with foliar sprayed with 5,10,20 mmol/L CaCl2 solution every 3 days for 3 months. Primula sazcatilis were gauged with morphological indexes and physiological indexes every a half months. Results showed that Ca^2＋ 5 mmol/L could improve the tolerance of Primula sa：catilis to heat stress in some extent. Be dealt with the 5mmol/L CaCl2 solution, Primula saxatilis could be cultivated in greenhouse of Beijing during summer more easily.