摘要
采用对比方法研究了草浆地膜覆盖对青稞(Hordeumvulgare)农田土壤的保水作用,以期明确草浆地膜的农田保水理论依据和保水效果。结果表明:草浆地膜覆盖下的土壤表面相对湿度、土壤紧实度和土壤含水量等指标均低于塑料地膜覆盖处理,其中土壤含水量指标显著低于后者(n=3,P<0.05);与对照相比,草浆地膜覆盖下0～5cm土层内土壤紧实度显著降低,但土壤温度与对照相比相差不大,同时土壤表层水分散失明显减少,土壤含水量增加7.59%,达到显著差异水平(n=3,P<0.05)。草浆地膜覆盖保水效果十分明显。
In order to offer theoretical basis and clarify practical effect, straw pulp film and plastic film were compared to investigate the effect of film mulches for water conservation of soil in Hordeum vulgate farmland. Plastic film, straw pulp film and CK treatment were administrated; the effect was compared by measuring relative humidity of soil surface, soil temperature, soil compaction and water content. The results showed that all four factors monitored were lower in the treatment of straw pulp film than the plastic film, among which water content of the former was significantly reduced than the latter（n=3, P〈0.05 ）. In the treatment of straw pulp film comparing to CK, soil compaction was sig- nificantly reduced（n=3, P〈0.05 ）, while no significant difference in soil temperature was shown between the two. The evaporation of soil mois- ture reduced dramatically in the treatment of straw pulp film, resulting in a 7.59% statistically significant increase in the water content of soil （n=3, P〈0.05）. In conclusion, the straw pulp film mulch has significantly improved the water conservation of the soil in Hordeum vulgare farmland.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2012年第2期385-389,共5页
Journal of Agro-Environment Science
基金
教育部重点科研项目(210217)
西藏"十二五"重点科技项目"西藏饲草安全与高效利用关键技术研究与示范"
西藏自然科学基金项目"草浆地膜覆盖技术在西藏主要大田作物上的应用"
211工程师资队伍建设项目(SZRC-211-04)
关键词
草浆地膜
保水作用
农田
straw pulp film
water conservation
farmland
作者简介
关法春（1976-），男，讲师，博士，从事农业生态学研究。
