不同配比棉花秸秆基质对水果黄瓜幼苗生长的影响

[目的]研究不同配比棉花秸秆复合基质对水果黄瓜幼苗生长的影响.[方法]通过在棉花秸秆中分别加入尿素、磷酸二铵和清水,进行腐熟发酵,再将各处理腐熟的棉花秸秆与草炭、蛭石、珍珠岩按不同比例配成复合基质,以水果黄瓜为试验材料进行育苗试验.[结果]不同配比复合基质对水果黄瓜幼苗的生长影响较大.以棉花秸秆(磷酸二铵处理)∶蛭石∶草炭=2∶1∶1配比的复合基质效果最好,其容重为0.27 g/cm3,总孔隙度为84.72;,通气孔隙为26.34;,持水孔隙为58.38;,pH为6.88,EC值为1.11 ms/cm；水果黄瓜幼苗生长势良好,叶绿素含量较高,育苗效果理想.纯棉花秸秆配方的育苗效果最差.[结论]棉花秸秆(磷酸二铵处理)∶蛭石∶草炭=2∶1∶1可以推荐作为水果黄瓜育苗基质.

The Effects of Different Mixing Cotton Straw Substrates on Growth of Fruit Cucumber Seedlings

[Objective]This paper intended to study the effects of different mixing cotton straw substrates on growth of fruit cucumber seedlings.[Method]Urea,diamidogen and water were added in cotton straw composting fermentation,and then the mature cotton stalks with peat,vermiculite,perlite composite matrix made by different proportions as experimental material,the experiment of fruit cucumber nursery was conducted to study the impact of different composite substrates on the growth of fruits of cucumber seedlings. [Result]The results showed that different formula compound substrates had significantly different effects on the growth of the fruit cucumber seedlings,the cotton straw(the diamine processing):vermiculite;peat = 2 :1:1 was the best,whose bulk density was 0.27 g/cm~3,total porosity 84.72%,air space 26.34%,water holding pores 58.38%,pH 6.88,EC 1.11 ms/cm.The growth state,chlorophyll content were high in this proportion of substrate.Pure cotton stalk formula was the worst in all the treatments.[Conclusion]The cotton straw(the diamine processing):vermiculite:peat = 2:1:1 could be recommended as a feasible substrate for fruit cucumber seedlings.