土壤中施用聚丙烯酸钠保水剂对冬小麦生长及产量影响

聚丙烯酸钠因其特殊的保水性能受到广泛重视,但是其研究仍多限于实验室模拟研究.为了促进其在农业生产中的应用与推广,该文采用大田试验,研究了聚丙烯酸钠对冬小麦生长、产量及水分利用效率(WUE)的影响.结果表明施入聚丙烯酸钠能够促进小麦生长,提高小麦叶绿素含量,提高小麦产量与WUE.采用沟施5.5 m3/hm2的1/2000聚丙烯酸钠水溶液,能够使小麦较对照增产2.9%,WUE增加3.52kg/(hm2·mm);与肥料混合使用时,增产效果更加显著,可增产10.14%,WUE增加4.38 kg/(hm2·mm).

Effects of super absorbent polyer of sodium polyacrylate used in soil on the growth and yield of winter wheat

Sodium polyacrylate is paid more attention to because of its effect on water keeping. However, researches were always took in lab scale. Application for promotion of sodium polyacrylate in agriculture as aim, based on the experiments in field, the effect of sodium polyacrylate on the growth, yield and water use efficiency (WUE) of winter wheat were studied. The result show that the used of sodium polyacrylate can improve wheat growth, increase chlorophyll contents, raise wheat yield and WUE. The yield and WUE was advanced at 2.9% and 3.52 kg/(hm2·mm) when a solution of 1/2000(g/g) of sodium polyacrylate in water was used at 5.5 m3/hm2 in ploughed furrow. As the fertilizer was mixed with it, the yield and WUE were increased even more obviously reached 10.14% and 4.38 kg/(hm2·mm) respectively.