江西农业大学学报Issue(3)：601-608,8.DOI:10.13836/j.jjau.2014098
橘园夏季植草的小气候效应
Effect of Interplanting Grass on the Climate in the Citrus Orchard
摘要
Abstract
The daily variation of microclimatic characteristics was measured in six treatments of interplan-ting perennial ryegrass ( Lolium perenne ) , ageratum ( Ageratum conyzoides ) , cornflower ( Centaurtea cyanns ) , lemon basil ( Ocimum americannm) ,herbacichorii ( Cichorium intybus ) and bare land in the citrus orchard .The diurnal variations of air temperature , relative humidity , soil temperature and soil moisture content were ana-lyzed,so as to study the influence of different interplanting grass cultivations on the microclimate in the citrus orchard and provide the theoretical basis for optimizing the planting patterns of citrus orchards .The results showed that compared with the CK the interplanting grass treatments could decrease the daily average air tem -perature ranging from 0.5 to 1.2℃.The heights of the layers of the grasses with maximum cooling rates were in the order of lemon basil (20 cm),ageratum (50 cm),ryegrass (150 cm),herbacichorii(150 cm),cornflower (150 cm).Compared with the CK the interplanting grass treatments could decrease the daily average soil temper -ature ranging from 1.7 to 3.7℃in summer .The cooling rates of all the grass species were the highest at the 15 cm depth layer .Compared with CK ,the interplant grass treatments could increase the daily air relative humidity ranging from 3.3%to 6.5%and increase the daily soil moisture content ranging from 1.2%to 3.5%in summer. The daily average soil moisture of each soil layer increased by 1.2%-3.5%.The soil temperature was signifi-cantly correlated with the soil moisture content in each soil layer .With the increase of soil depth ,the correla-tion coefficient decreased .Herbacichorii had the best effect on reducing the air temperature ,lemon basil had the best effect on increasing the air humidity ,and ryegrass had the best effect on reducing the soil temperature and increasing the soil moisture content .关键词
植草/小气候效应/日变化/橘园Key words
interplanting grass/microclimate effect/diurnal variation/citrus orchard分类
农业科技引用本文复制引用
吴红敏,曾娇,熊忠华,刘勇,陈晖,肖金香..橘园夏季植草的小气候效应[J].江西农业大学学报,2014,(3):601-608,8.基金项目
国家科技支撑计划项目 （）
