【摘要】 为了解决城市草坪绿地土壤性状恶化问题和有效利用菇渣资源,进行了菇渣堆肥绿地土壤改良试验,通过混合(H)、覆盖(F)、混合+覆盖(HF)处理,研究菇渣堆肥不同施入方式对绿地土壤物理性质及草坪生长的影响。结果表明:三种施入方式均能显著降低表层(0~10cm)土壤容重,增加土壤孔隙度,F和HF改良效果最理想;各施入方式均能显著提高土壤渗透性,具有显著的保水作用,含水量由高到低依次是F>HF>H,分别比对照高31%、23%、16%。不同施入方式还均能显著促进草坪生长和分蘖,增加草坪地下生物量,其中F处理的分蘖密度和地下生物量最高,分别比对照高46%和35%;F处理的杂草抑制率在98%以上,HF为56%,H处理未能抑制杂草;依据NTEP对草坪外观质量综合评分,覆盖处理6.73分,草坪质量良好,混合覆盖与混合处理分别为5.91分和5.55分,草坪外观质量尚可;F与HF处理还能减缓土壤温度变化幅度。更多还原

【Abstract】 In order to solve the problems that soil characters was easily deteriorated in urban greenbelt and sufficiently utilize spent mushroom compost,soil improvement experiment in greenbelt was carried out.The effect of spent mushroom compost on soil physical properties and turf growth in greenbelt was studied by treatments of bliending(H),the mulching(F),blending and mulching(HF).The results showed that all the three application method can reduce the upper layer(0~10cm) soil bulk density and increase the total porosity significantly,the ideal application method was the F and HF treatment.The soil permeability and moisture content was also significantly increased with the different application method,the moisture content ranking from high to low was F>HF>H,and were increased by 31%,23%,16%,respectively,compared to CK all the three application method also presented significant promotion on the lawn growth rate,tiller density and underground biomass.The number of turf tiller density and underground biomass were the highest with F treatment and compared to CK treatment increased by 46% and 35%,respectively.More than 96% of weed population were reduced with F treatment,the inhibition rate with HF treatment were 56% and there was no inhibiting effect with H treatment.Through NTEP the comprehensive assessment of the external appearance quality of lawn,the comprehensive score of F treatment was 6.73 and the external quality appearance was good.The HF and H treatment were 5.91and 5.55,respectively,their external quality appearance were both fair.Except H treatment soil temperature variation was less in F and HF treatment.更多还原