首页|不同覆膜模式下调亏灌溉对土壤积温和玉米生长的影响

不同覆膜模式下调亏灌溉对土壤积温和玉米生长的影响

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为了揭示不同覆膜模式下调亏灌溉对土壤温度、玉米生长和产量的影响效应,于2021年在兰州市永登县试验站基地开展玉米覆膜与调亏灌溉试验,设计覆盖普通白色地膜(M1)、黑色地布(M2)、生物降解膜(M3)、液态地膜(M4)4种覆膜模式,设置充分灌溉(D1)和轻度水分胁迫(D2)2种补充灌溉制度,共8个处理.以普通白色地膜覆盖结合充分灌溉(D1M1)为对照,分析各处理对土壤温度、玉米生长和产量的影响.结果表明:普通白色地膜(M1)增温效果最好,液态地膜(M4)增温效果最差;相同覆膜模式下,不同水分胁迫处理间土壤温度差异不显著.不同覆膜模式对玉米生长和产量等影响有所不同,轻度水分胁迫对玉米产量影响不显著,覆膜模式和水膜交互作用对玉米产量影响极显著(P＜0.01),表现为覆膜模式的影响大于水膜交互作用的影响.D2M1(白色地膜覆盖结合轻度水分胁迫)处理产量最高,为19 761.32 kg/hm2,显著高于其他处理.D1M3(生物降解膜覆盖结合充分供水)处理产量稍高于对照,考虑环境友好因素D1M3种植模式有利于灌区可持续发展.
Impact of Regulated Deficit Irrigation on Soil Temperature and Maize Growth with Different Mulching Methods
To investigate the impact of regulated deficit irrigation(RDI)on soil temperature,maize growth and yield with different mulching methods,we conducted field mulching and RDI experiment at an experimental base in Yongdeng county,Lanzhou City,in 2021.A total of eight treatments were arranged with four mulchings,namely white film-mulch(M1),ground fabric(M2),biodegradable plastic film(M3),and liquid film(M4),each un-der two supplemental irrigation scenarios,that is,sufficient irrigation(DI)and mild water stress(D2).The im-pact of each treatment on soil temperature and maize growth and yield were examined,with white film-mulch under sufficient irrigation(D1M1)serving as the control group throughout the growth period.Results indicated that white film-mulch demonstrated the most effective increase in surface soil temperature,while liquid film performed the least favorably in this regard.Soil temperature did not show significant differences among various water stress sce-narios given the same mulching method.Maize growth and yield varied significantly dependent on the mulching methods employed.Mild water stress did not notably affect maize yield,but a combination of mulching methods and water-film interaction significantly boosted yield(P＜0.01),with the former outperforming the latter.The highest yield was achieved with treatment D2M1 at 19 761.32 kg/hm2,significantly surpassing yields from other treatments.Yield under D1M3 was slightly higher than that of the control treatment.Being environmental friendly,the D1M3 treatment is the most conducive for regional sustainable development.

maize growthmulching methodsregulated deficit irrigationaccumulated soil temperatureyield

张小艳、张芮、魏鹏程、王建旺、马永保、张真荣、温文、孙凯悦、焦兆祥

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甘肃农业大学 水利水电工程学院,兰州 730070

甘肃省引大入秦水资源利用中心,兰州 730300

玉米生长 覆膜模式 调亏灌溉 土壤积温 产量

甘肃省水利科学试验研究与技术推广计划甘肃省水利科学试验研究与技术推广计划甘肃省水利科学试验研究与技术推广计划甘肃农业大学水利水电工程学院青年教师科技创新基金旱区特色经济作物节水灌溉与水资源高效利用团队项目

甘水建管发[2021]71号-71甘水建管发[2021]71号-8甘水建管发[2021]71号-70SLXY-QN-2020-10

2024

10.11988/ckyyb.20221477

长江科学院院报
长江科学院

长江科学院院报

CSTPCD北大核心
影响因子：0.618
ISSN：1001-5485
年,卷(期)：2024.41(5)