绿色保湿增肥块的土壤保湿效果研究  

Soil Water Preservation Effect of the Moisture Retention and Fertility Intensifier Block

作　　者：张潘[1] 徐福利[1,2] 于钦民[2] 

机构地区：[1]中国科学院/水利部水土保持研究所,陕西杨凌712100 [2]西北农林科技大学水土保持研究所,陕西杨凌712100

出　　处：《中国水土保持》2013年第5期47-49,55,共4页Soil and Water Conservation in China

基　　金："十二五"国家科技支撑计划项目(2011AA100503)资助项目

摘　　要：为了减少土壤水分蒸发和增加土壤养分含量,通过盆装试验,研究了绿色保湿增肥块的保湿效果。绿色保湿增肥块由有机秸秆与保水剂黏合压制而成,吸水后会迅速膨胀分解,在土壤中形成透气层,为植物根的生长提供有利的条件。试验结果表明:绿色保湿增肥块能够有效地减少土壤水分的蒸发,平均蒸发量处理Ⅰ为35.82 g/2d,处理Ⅱ为33.79 g/2d,分别比对照的37.59 g/2d减小了4.94%和11.25%;与对照相比,试验结束时处理Ⅰ和处理Ⅱ的土壤含水量分别提高了14.24%和30.63%。本试验中温度和空气湿度是影响土壤水分蒸发的主要因素,最大蒸发量为145 g/2d,最小蒸发量为0,变化较大。In order to reduce evaporation of soil moisture and increase soil nutrient contents,the study used potted loading experiment to study on water preservation effect of the moisture retention and fertility intensifier block(G block for short).Combined with organic straw and water retaining agent,the G block will be rapidly expanded and decomposed after absorbing water.Then it will form a breathable layer that can provide favorable conditions for the growth of plant roots.The results show that the G block can effectively reduce the evaporation of soil moisture.The average evaporation of the control is 37.59 g /2d,the experimental treatmentⅠis 35.82 g /2d and the treatmentⅡ is 33.79 g /2d,which have been reduced 4.94% and 11.25% respectively.Comparing with the control,the experimental treatment Ⅰ and Ⅱ have increased the soil moisture about 14.24% and 30.63% respectively at the end of this experiment.Temperature and air humidity are the major factors that affect the soil water evaporation of the study.The maximum evaporation is 145 g /2d and the minimum evaporation is 0.

关 键 词：绿色保湿增肥块 土壤蒸发量 土壤养分 土壤含水量 吸水量 

分 类 号：S152.7[农业科学—土壤学]