【摘要】 使用保水剂可显著改善砂土物理性质，提高土壤有效水含量，并能提高苹果幼树成活率，促进其生长。单独使用塑料袋或与保水剂一起使用可提高土壤含水量，缓解土壤温度的日间变幅，提高杏树成花率。更多还原

【Abstract】 The application of water-holding agent can remarkably improve physicalproperties of sandy soil and raise the avaliable water content in sandy soil and survivalrate of young apple trees and promote vegetative groath.The application of plastic bagssolely or that in combination with water-holding agent in sandy soil can increase soil wa-ter content,and regulate the daily fluctuation in soil temperature,and increase the flowerbud rate of apricots. Accordingly,it is necessary to have the further study of two tech-niques in order to make the wide use of them in fruit crop cultivation in sandy soil.更多还原