不同生活型蚯蚓蚓粪化学组成及其性状的研究

蚓粪已经渐渐成为国内外研究者所关注的一个焦点,而对蚓粪化学成分及性状的研究也逐渐引起了人们的注意.本文研究比较了两种不同生活型蚯蚓蚓粪和对照土壤之间的化学组成及性状的异同.结果表明:蚓粪和对照土壤相比,有着更高的pH和电导率值,且差异显著(P＜0.05)；蚓粪比对照土壤有着更多的碳水化合物和更少的多酚类物质,差异分别达31.36～ 33.81 mg/kg和4.28 ～ 5.08 mg/kg;同时,蚓粪内酸解氨基酸含量要比对照土壤高出3.84～5.06mg/g;植物激素GA3相对于对照土壤增幅达35％～ 114％,而IAA的增幅则为78％～236％.在相同的环境下,同样生物量的环毛蚓(威廉环毛蚓)和爱胜蚓(赤子爱胜蚓)对蚓粪pH值、碳水化合物和多酚含量的作用无显著差异(P＞0.05)；对蚓粪电导率、植物激素和氨基酸含量的影响爱胜蚓要显著大于环毛蚓.总之,蚓粪的pH值、电导率和化学组成与对照土壤相比都有着显著的差异,不同生活习性的蚯蚓蚓粪也会有着一定的不同.

Wormcast Properties and Chemical Compositions of Different Earthworm Biotypes

The chemical composition and properties of wormcast have gradually become into one of the research focuses. In this paper the chemical composition and properties of two earthworm biotypes (Eisenia foetida and Metaphire guillelmi) were studied under laboratory conditions. The results were as follows: 1) significant increases (P < 0.05) in pH values and electrical conductivities were found in wormcast than that in the control soil (CK); 2) carbohydrate contents of wormcast were 31.36 - 33.81mg/kg higher than that of CK while polyphenol contents of wormcast were 4.28 - 5.08 mg/kg lower than that of CK; 3) contents of acidolysis amino acids, plant hormone GA3s and IAAs were 3.84 - 5.06 mg/g, 35 - 114% and 78% - 236% higher than those of CK respectively; in the same environment, the two earthworm biotypes under the same biomass showed no significant differences in pH values, carbohydrate and polyphenol contents, but the effects of Eisenia foetida on electrical conductivity, phytohormone and amino acid contents were significantly higher than those of Metaphire guillelmi.