分次施肥对黄瓜生长、产量以及叶绿素荧光特性的影响

Effects of split application on cucumber growth,yield and chlorophyll fluorescence characteristics

采用泡沫槽栽培方法,研究了在施肥总量相同的条件下,不同施肥次数对黄瓜生长、产量以及叶绿素荧光参数的影响。结果表明:定植初期,处理A2(平均分2次施入)的株高、茎粗、叶片数一直保持最高;处理A1(作为基肥一次性施入)定植初期遭遇一定肥害,生长缓慢;处理A3(平均分3次施入)和处理A4(平均分4次施入)由于基肥不足,植株生长缓慢。在结果旺盛期,处理A2的生长势(茎粗、株高、最大叶宽、叶片数、叶绿素含量)最强,叶绿素荧光参数ETR、Yield和ΦPSII值也较高。处理A2的地上部鲜重、干重、单株结瓜数和单株产量均最高,与其他处理相比呈显著性差异。

A foam tank culture experiment was conducted to study the effects of different fertilizater application frequency on growth,yield and chlorophyll fluorescence characteristics of cucumber with the same level of fertilizer.The results showed that,in the early period of planting,the plant height,stem diameter and leave number of treatment A2 were the highest all along.Treatment A1 grew slowly because of fertilizer damage in the early time of planting.Treatment A3 and A4 grew slowly too,due to lack of base fertilizer.At the fruit blooming period,the growth vigor,ETR,Yield and φPSII of treatment A2 maintained higher.The fresh weight,dry weight,fruit number and yield per plant of treatment A2 were the highest and significant difference comparing to other treatments.