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采用盆栽控制试验 ,研究了单作和混作栽培方式及不同施肥处理条件下 ,水分胁迫对金沙江干热河谷典型土壤 (燥红土和变性土 )玉米 (ZeamaysL .)叶片过氧化物酶 (POD)活性的影响。结果表明 :①在一定的水分胁迫范围内 ,玉米叶片的过氧化物酶活性随着土壤含水量的降低而升高 ,但过度胁迫时 ,酶活性降低 ;②随着土壤含水量降低 ,燥土和变性土上生长的玉米叶片的酶活性的变化规律略有差异 ,这与二者的土壤物理性质有关 ;③施肥处理 [T (N 10 0mg+P2 O5170mg +K2 O 6 0mg/kg干土 ) ;Z (NPK +Zn10mg/kg干土 ) ;M (5 2 g干牛粪 /kg干土+NPK) ]和栽培方式对玉米叶片的酶活性有影响
A pot experiment was conducted to study the effects of water stress on the activities of peroxidase (POD) in leaves of Zeamays L. in typical soils (dry-red soil and denuded soil) of Jinshajiang dry-hot valley under single-cropping and mixed-cropping practices and under different fertilization treatments Impact. The results showed as follows: ① Under certain water stress, the peroxidase activity of maize leaves increased with the decrease of soil water content, but decreased under the excessive stress; ② With the decrease of soil water content, And that of maize leaves grown on denatured soil were slightly different, which were related to the soil physical properties of the two. (3) Fertilization treatment [T (N 10 0mg + P2 O 5170mg + K2 O 6 0mg / kg dry soil) ; Z (NPK + Zn10mg / kg dry soil); M (52g dry cow manure / kg dry soil + NPK)] and cultivation methods had effects on the enzyme activity of maize leaves