生长调节物质及营养液对5种水培花卉的影响

Influences of plant growth regulators and nutrient solutions on five plants in hydroponic culture

为探讨植物生长调节物质处理对花卉植株洗根移栽后水培的影响,开展了用“生跟”(20%α-萘乙酸粉剂)及ABT 3号生根粉处理白掌Spathipyllum floribundum,绿帝王Philodendron‘Imperial Green’,朱蕉Cordyline fruticosa,君子兰Clivia miniata,水晶花烛Anthuriumclarinervium等5种土培花卉的洗根植株。试验结果表明:质量浓度为0.02 mg.L-1的ABT3号生根粉处理可显著提高水培植株活力根数及减少烂根,其活力根数量较对照(清水)平均增多了2.6条;用氮、磷、钾比例不同的3种营养液水培5种花卉,从叶片和根系生长及植株整体状况考虑,营养液氮、磷、钾的最佳比例为20∶1∶20,主要表现为植株根系生长旺盛,须根多,新叶生长快,叶面积大和个体质量大等。

Using NAA and ABT to treat SpathipyUum floribundum, Philodendron ‘Imperial Green＇, Cordyline fruticosa, Clivia miniata, Anthurium clarinervium, in order to inquire irito the influence of growth regulators on the growth of plants in hydroponic culture after washing roots and transplanting. The results show that 0.02mg·L^-1 of ABT No.3 can increase the quantity of active roots （evenly 2.6 roots more than that of the control） and reduce rot roots. Through cultivating the five hydroponic plants in three nutrient solutions which are different ratios of N, P and K tu chose best hydroponic solution. Taking the growth of the leaves, the roots and the whole plants into account, the nutrient solution which the ratio of N, P, K is 20：1 ： 20 is the best to the five plants. The plants shows that the roots growing vigrous, fibrous roots being many, new leaves growing fast, the area of leave being big, and the individual plant being heavy cultivated in the best nutrient solution. [ Ch, 3 tab. 8 ref. ]