ZHAO Dun-hou,GUAN Fa-chun,ZHANG Da-yong,et al.Effect of Straw Pulp Mulching Film on Plant Growth of Soybean at Seedling Stage[J].Soybean Science,2022,41(02):159-164.[doi:10.11861/j.issn.1000-9841.2022.02.0159]
草浆地膜覆盖对大豆苗期生长状况的影响
- Title:
- Effect of Straw Pulp Mulching Film on Plant Growth of Soybean at Seedling Stage
- Keywords:
- straw pulp mulching film; soybean; seedling stage; water content; weed; plant growth
- 文献标志码:
- A
- 摘要:
- 为了明确草浆地膜覆盖在苗期大豆上的应用效果，采用对比方法，研究草浆地膜覆盖技术对土壤状况、植株与杂草长势等方面的影响。结果表明：与对照相比，草浆地膜处理减少了水分散失，地膜表面湿度下降9.31百分点，从而减少了水分蒸发，土壤含水量提高19.09百分点，但是对土壤温度影响不大；草浆地膜处理大豆出苗率和出苗势均降低12.50百分点，但株高和茎粗分别提高0.47 cm和0.11 mm，同时草浆地膜处理植株后叶片超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性和丙二醛(MDA)含量等出现不同变化，叶片SPAD值和叶面积分别提高1.58和10.99 cm2；此外，草浆地膜处理的杂草种类、密度、盖度和生物量均低于对照，其中蒺藜草、灰绿藜2种杂草的密度和盖度指标处理间差异显著，草浆地膜处理的总密度和总盖度显著低于对照。因此，草浆地膜虽然不能提高土壤温度，但由于其具有良好的土壤保水效果，能够促进大豆苗期植株的生长，并可减少杂草滋生，具有较大的生产推广潜力。
- Abstract:
- In order to make clear the application effect of straw-pulp film covering on soybean seedlings， we used the comparative method to clarify the application effect of straw pulp mulching on the aspects of soil condition， plant and weed growth for soybean at seedling stage in the study. The results showed that compared with the CK， the straw pulp mulching treatment reduced water loss， the surface humidity of mulching film decreased by 5.06%， thus the water evaporation was reduced and the soil water content was increased by 2.92%， but there was little effect on soil temperature. The emergence rate and emergence potential of soybean treated with straw pulp mulching film decreased by 11.11%， but the plant height and stem diameter increased by 0.47 cm and 0.11 mm respectively. At the same time， the superoxide dismutase (SOD) activity， peroxidase (POD) activity and malondialdehyde (MDA) content in leaves of soybean treated with straw pulp mulching film changed differently， and the chlorophyll SPAD value and leaf area increased by 1.58 and 10.99 cm2 respectively. In addition， the species， density， coverage and biomass of weeds treated with straw pulp mulching were lower than those of the control. There were significant differences in the density and coverage indexes of Cengrus echinatus and Chenopodium glaucum， and the total density and coverage of straw pulp mulching were significantly lower than those of the control. Therefore， although straw pulp mulching film can not improve soil temperature， it can promote the growth of soybean seedlings and reduce the breeding of weeds because of its good soil water retention effect， so it has great promotion potential in soybean production.
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备注/Memo
收稿日期：2021-08-09