核农学报2018，Vol.32Issue(5)：1016-1022,7.DOI:10.11869/j.issn.100-8551.2018.05.1016
保水剂对旱作马铃薯产量及水分利用效率的影响
Effects of Super Absorbent on Yield and Water Use Efficiency of Potato in Dry Land
摘要
Abstract
In order to explore effect of super absorbent on crop yield and water use during the key growing period of potato in the region of southern Ningxia,a field study was conducted to investigate effects of super absorbent dosages on soil water,potato yield,water use efficiency (WUE),and economic benefit by comparing two different types of super absorbents (Wote and Microbe).The two SAPs were applied at different rates of 30 kg·hm-2,60 kg·hm-2,and 90 kg·hm-2 in the experiments,while the treatment with no super absorbent applying was marked as the control.The results showed that the application of Microbe super absorbent could improve soil water status in plough layer,and significantly promoted the growth in the early florescence stage of potato.In contrast,the Wote super absorbent could improve soil water status in deep layer,and significantly promoted the growth in the expansion-maturity stage of potato,and the aboveground biomass of potato under the treatments of Wote super absorbent were significantly higher than the control.Compared with control,the application of Wote super absorbent 90 kg· hm-2 significantly increased the yield and WUE of potato by 44.1％ and 75.8％,followed by Microbe super absorbent of 60 kg· hm-2.The commodity rate was the highest (87.3％) with applied Wote super absorbent 60 kg· hm-2,followed by Microbe super absorbent of 60 kg·hm-2.According to the analysis of economic benefits,it was found that in the potato production in the dry land of south Ningxia,the application of Wote super absorbent 30 ～ 60 kg· hm-2 could significantly increase the economic benefits of potato.This study provides a theoretical basis for the application of super absorbent in dry farming region.关键词
保水剂/土壤水分/马铃薯产量/水分利用效率/经济效益Key words
super absorbent/soil water/potato yield/water use efficiency/economic benefit引用本文复制引用
侯贤清,李荣,何文寿,马琨,代晓华..保水剂对旱作马铃薯产量及水分利用效率的影响[J].核农学报,2018,32(5):1016-1022,7.基金项目
公益性行业(农业)科研专项项目(201503120),国家自然科学基金(31760370),国家科技支撑计划项目(2015BAD22B05-03) （农业）
