亚硫酸氢钠影响桃树产量和质量的生理学分析

PHYSIOLOGICAL ANALYSIS FOR EFFECT OF NaHSO_3 ON PEACH YIELD AND QUALITY

不同浓度NaHSO3 在桃树上的应用研究表明 ,以 ρ(NaHSO3 ) =10 0mg/L使用效果最佳 .于果实膨大期喷施 3次 ,能明显提高桃树座果率和单果重 ,增加产量 ,改善果实品质 ,促进新梢生长 .实验证明 ,NaHSO3 的这些功能与其抑制过氧化氢酶活性 ,提高光合速率及希尔反应活力 ,增加叶绿素含量与比叶重 ,促进光合产物输出等多重生理效应相关 .表 4参

Study on application of NaHSO 3 with different concentrations to peach shows ρ (NaHSO 3)=100 mg/L is the optimum concentration. When NaHSO 3 was sprayd three times on the leaves of peach tree at stage of fruit expanding, it could raise fruit set percentage, single fruit weight and total yield, promote new shoot growth, and improve quality. The study indicated that these increments were related to the inhibition of catalase activity, increases in photosynthetic rate, Hill reaction activity, chlorophyll content, specific leaf weight, and promotion of the export of assimilates. Tab 4, Ref 11