调环酸钙对夏直播花生衰老、产量和品质的影响

Effect of Prohexadione Calcium on Senescence,Yield and Quality of Summer-planting Peanut

大田栽培条件下,研究了叶面喷施调环酸钙(prohexadione calcium)对花生(Arachis hypogaea L.)衰老、产量和品质的影响。结果表明,调环酸钙可显著提高花生根系活力、叶片叶绿素含量以及植株(根系和叶片)中超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)的活性和可溶性蛋白质(Pr)含量,降低丙二醛(MDA)含量;调环酸钙可显著降低花生植株高度和kg果数,增加单株果数、出米率、荚果产量和脂肪含量。每hm2使用30g的处理效果明显好于60g的处理。

Under the condition of field cultivation,the effects of foliar-spraying of different concentration of prohexadione calcium on the physiological characters of root and leaf of peanut (Arachis hypogaea L.) were studied. Results indicated that prohexadione calcium could improve promptly the activity of root system and chlorophll content of leaf,enhance the activities of superoxide dismutase (SOD),peroxidase (POD),catalase (CAT) and the content of soluble protein (Pro) in root and leaf of peanut,decrease the content of propyldialdehyde (MDA) of leaf and root. Prohexadione calcium can markedly reduce plant height and pod number per kg,increase pod number per plant,the ratio of seed to pod,pod yield and protein content. The effect of lower concentration (30 g·hm-2) was more efficient than that of higher concentration (60 g·hm-2).