PAM与SAP联合施用对旱作坡耕地的水分保蓄影响  

The Effect of Polyacrylamide Combined with Super Absorbent Polymers on Water Conservation of Sloping Farmland in Arid Area

作　　者：王富 魏占民[1] 付晨星[1] 杨旭东 赵炜 WANG Fu;WEI Zhan-min;FU Chen-xing;YANG Xu-dong;ZHAO Wei(Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018,China)

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018

出　　处：《节水灌溉》2020年第8期55-58,共4页Water Saving Irrigation

基　　金：内蒙古自治区科技创新引导项目;国家自然科学基金项目(51469024)。

摘　　要：为研究PAM和SAP联合施用对坡耕地土壤水分和马铃薯生长的影响效果,在内蒙古卓资县以不施材料为对照,设置喷施PAM混施SAP与混施PAM混施SAP各3组试验处理。结果表明:PAM和SAP联合施用后可以提高0~40 cm土层含水率,并且含水率随施用量增加而提高。H3与P3与对照相比最大增加26.97和21.04。施用PAM和SAP可提高苗期坡耕地0~80 cm土层贮水量,土壤贮水量与施用量呈正相关;但在马铃薯其他生育期,处理后的土壤贮水量低于对照。从播种到收获期,P2的马铃薯生物量达到最大,其水分利用效率比对照增加29.54。因此,适量的施用PAM和SAP可改善土壤水分环境,增加马铃薯产量。In order to study the effect of different application methods on soil moisture and potato growth in sloped farmland under the combined application of PAM and SAP,field experiments were carried out in Zhuozi County,Inner Mongolia.With no application treatment as the control,3 groups of experimental treatments were set.The results showed that the combined application of PAM and SAP could increase the moisture content of 0~40 cm soil layer,and the moisture content increased with the increase of application amount.Compared with P3 and control treatment,the maximum increase of H3 was 26.97%and 21.04%.The application of PAM and SAP could increase the soil water storage of 0~80 cm in the sloping farmland at the seedling stage,and the soil water storage was positively correlated with the application amount.However,the soil water storage after treatment was lower than that of the control group during other growth periods of potato.From sowing to harvest,potato biomass of P2 reached the maximum,and its water use efficiency increased by 29.54%compared with control.Therefore,proper application of PAM and SAP can improve soil moisture environment and increase potato yield.

关 键 词：土壤结构调理剂PAM 保水剂SAP 马铃薯 土壤贮水量 水分利用效率 水分产出效率 

分 类 号：S275.5[农业科学—农业水土工程] S156.92[农业科学—农业工程]