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通过田间试验,研究叶面喷施不同稀释倍数稻壳醋液对4种叶菜(苏州青、青梗菜、生菜、菠菜)生长的影响。结果表明:喷施稻壳醋液后4种叶菜的株高、叶片数和叶绿素含量有增高趋势。4种叶菜的干质量及单株氮、磷、钾吸收量随稻壳醋液浓度的升高而增加,以处理4(原液稀释3倍)最好。4种叶菜处理中的干质量比相应的对照(清水)提高1.49～3.36倍,而单株氮、磷、钾吸收量也比相应对照(清水)高1.28～4.07倍。喷施稻壳醋液显著提高生菜、2种不结球白菜(品种为‘苏州青’和‘青梗菜’)的可溶性糖含量。结论:本试验条件下叶面喷施稻壳醋液有利于叶菜的生长。
A field experiment was conducted to study the effects of spraying rice hull vinegar with different dilution times on the growth of four leafy vegetables (Suzhou green, Qinghai dish, lettuce and spinach). The results showed that the plant height, leaf number and chlorophyll content of four leafy vegetables increased with the spraying of rice hull vinegar. The dry weight of four leafy vegetables and the uptake of nitrogen, phosphorus and potassium per plant increased with the increase of the concentration of rice hull vinegar, which was the best for the treatment 4 (three times dilution of original liquor). The leaf dry weight of the four leaf treatments was 1.49-3.36 times higher than that of the corresponding control (fresh water), while the N, P and K uptake per plant was also 1.28 ~ 4.07 times higher than that of the corresponding control (fresh water). Spraying rice hull vinegar significantly increased the soluble sugar content of lettuce and two kinds of non-heading Chinese cabbage (’Suzhou Qing’ and ’QingtiGai’). Conclusion: Under the conditions of this experiment, spraying rice hull vinegar on foliar surface is good for the growth of leaf vegetables.