表面活性剂PPJ对小麦叶子吸收营养物质的影响

EFFECTS OF SURFACTANT PPJ ON THE ABSORPTION OF NUTRIENT ELEMENTS IN WHEAT LEAVES

研究了不同浓度的表面活性剂脂肪醇聚氧乙烯醚 (PPJ)叶面喷施对小麦叶子不同生长时间对营养物质硼、天冬氨酸和锰离子吸收的影响。结果表明 ,低浓度的PPJ对硼 (B)、天冬氨酸 (Asp)、锰离子 (Mn2 +)的吸收有促进作用 ,其中0 .4mmol/L ,0 .4mmol/L ,0 .3mmol/L的PPJ分别对B ,Asp,Mn2 +的吸收促进作用最大 ;叶面喷施以上浓度PPJ后 ,小麦叶子分别于 12h ,12h和 48h对B ,Asp,Mn2 +的吸收达到最大 ,分别比对照高出 32 5 % ,6 0 %和 192 %。

The surfactant PPJ (alcohol polyoxyethanol) was mixed with plant nutrients and sprayed onto wheat leaves at different growth stages of the crop to study the effect of the surfactant on nutrient absorption by the plants.PPJ at lower concentrations stimulated the absorption,of B,aspartic acid and Mn 2+ .Its optimum concentration was 0.4,0.4 and 0.3 mmol/L for the absorption of B,aspartic acid Mn 2+ ,respectively,and maximum intake of the three nutrients by the plant leaves was reached 12,12 and 48 h.after the application,being 325%,60% and 192% higher than the control,in which no surfactant was added.