干旱地区农业研究2013，Vol.31Issue(1)：140-145,165,7.
聚丙烯酰胺施用方式对土壤水热及春小麦生产的影响
Effects of PAM with different application methods on soil moisture,soil temperature and production of spring wheat
摘要
Abstract
In order to probe the best application method of polyacrylamide (PAM) in spring wheat production, a field experiment was carried out in Hetao irrigation district in Inner Mongolia in 2010, to investigate the effects of PAM being applied with three methods of furrowing, mixing and broadcasting on the soil moisture, soil temperature and growth of spring wheat, with no PAM as control. The results indicated that all application methods of PAM increased the soil moisture content, which was especially remarkable during florescence when the irrigation was absent, and the effect of broadcasting was stronger than that of furrowing and mixing. All application methods of PAM reduced the maximum temperature , increased the minimum temperature, decreased the diurnal temperature difference, and reduced the daily mean temperature of soil, among which broadcasting mainly affected the earth' s surface temperature, while furrowing mainly affected the soil temperature at 10 cm depth. The PAM treatments increased both the root biomass and total biomass, and promoted the distribution of crop roots in deep soil. Compared with the control, the yields of furrowing, mixing and broadcasting application were increased by 9.11% , 3.94% and 28. 82% , respectively. All the PAM treatments improved the water use efficiency, water production rate and irrigation production rate, in which the effect of broadcasting was the largest, and that of furrowing was the lowest. In Hetao irrigation district, it is the optimum method to apply PAM at the sowing stage of spring wheat by broadcasting.关键词
聚丙烯酰胺/施用方式/土壤水分/土壤温度/春小麦Key words
polyacrylamide (PAM)/ application methods/ soil moisture/ soil temperature/ spring wheat分类
农业科技引用本文复制引用
张蕊,耿桂俊,于健,白岗栓..聚丙烯酰胺施用方式对土壤水热及春小麦生产的影响[J].干旱地区农业研究,2013,31(1):140-145,165,7.基金项目
水利部科技推广计划项目"保水剂技术的推广应用"(TG1144) （TG1144）
国家"十二五"科技攻关项目"内蒙古河套灌区粮油作物节水技术集成与示范"(2011BAD29B03) （2011BAD29B03）
国家"十二五"科技攻关项目"黄土丘陵沟壑区水土保持与高效农业关键技术集成与示范"(2011BAD31B05) （2011BAD31B05）
