灌水模式对燕麦光合特性、干物质积累及产量的影响  被引量:2

EFFECTS OF IRRIGATION PATTERNS ON OAT PHOTOSYNTHETIC CHARACTERISTICS,DRY MATTER ACCUMULATION,AND YIELD

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作  者:赵宝平[1] 任鹏[1] 周磊[1] 刘瑞芳 刘景辉[1] ZHAO Baoping;REN Peng;ZHOU Lei;LIU Ruifang;LIU Jinghui(College of Agronomy,InnerMongoliaAgricultural University,Hohhot 010019,China;Experimental Center of Horticulture Science and Technology of Hohhot,Hohhot 010070,China)

机构地区:[1]内蒙古农业大学农学院,呼和浩特010019 [2]内蒙古呼和浩特园艺科技试验中心,呼和浩特010070

出  处:《内蒙古农业大学学报(自然科学版)》2021年第3期6-11,共6页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基  金:国家自然科学基金项目(31560373,31960378);现代农业产业技术体系建设专项资金资助(CARS-08)。

摘  要:为探究不同灌水模式对燕麦光合特性、干物质积累及产量的影响,在防雨棚池栽条件下设置4种灌水模式(M1底墒水;M2底墒水+拔节水;M3底墒水+抽穗水;M4底墒水+拔节水+抽穗水),以抗旱性较强的蒙燕1号和抗旱性较弱的坝莜3号为试验材料,比较分析了灌水模式对燕麦光合参数、地上部干物质积累、根干重、产量及其构成因素的影响。结果表明,2个品种的光合特性对灌水模式响应不一,与M1相比,M2和M3均显著提高了光合速率(Pn)和气孔导度(Gs),但M3的气孔导度显著低于M2(P<0.05)。随着灌水量增加,2个品种的地上部干物质积累量和根干重显著增加(P<0.05),在成熟期时蒙燕1号在M2和M3之间差异不显著,而坝莜3号M3处理显著高于M2(P<0.05)。燕麦产量随灌水增加而显著提高(P<0.05),M4产量最高,在灌水量相同时,抽穗期灌水更有利于增产。坝莜3号品种对水分变化更为敏感,灌溉对其产量促进作用更大,但在干旱缺雨或灌溉条件有限的情况下选择蒙燕1号品种,更易实现高产稳产。Fo study the effects of different irrigation patterns on the oat photosynthetic characteristics,dry matter accumulation,and yield,four irrigation models(i.e.M1,irrigation at pre-sowing;M2,irrigation at pre-sowing and jointingstage;M3,irrigation at pre-sowing and heading stage;M4,irrigation at pre-sowing,jointing stage and heading stage)were set up through the rain-proof shed experiment,two different drought-resistance oat varieties(i.e.the water sensitive cultivar Bayou 3 and the drought-resistant cultivar Mengyan 1)were selected as the experimental objects.The effects of the irrigation models on the oat photosynthetic parameters,above-ground biomass accumulation,root dry weight,and yield were analyzed.The results showed that the photosynthetic characteristics of the two varieties changed differently under the same irrigation pattern.The Pn and Gs in M2 and M3 significantly increased(P<0.05),compared to that of M1,but the Gs in M3 was lower(P<0.05)than that of M2.Increasing irrigation significantly decreased(P<0.05)Ci of Mengyan 1,but significantly increased(P<0.05)Ci of Bayou 3 at heading stage.M2 significantly increased(P<0.05)both two varieties’Tsat heading stage.With the increase of the irrigation volume,the above-ground biomass accumulation and root dry weight of the two varieties significantly increased(P<0.05),the difference between M2 and M3 of Mengyan 1 was not significant at the maturity stage,but the M3 was higher(P<0.05)than M2 for Bayou 3.The Oat yields significantly increased(P<0.05)with the irrigation volume increasing,and the yield of M4 was the largest.At same irrigation amount,irrigation at the heading stage was more conductive to increase the production.Compered to Mengyan 1,Bayou 3 was more sensitive to the moisture changes,and the irrigation had a greater effect on the yield promotion.Under drought and rain shortage,or limited irrigation conditions,Mengyan1 was easier to obtain high and stable yields.

关 键 词:灌水模式 光合特性 干物质积累 燕麦产量 

分 类 号:S512.671[农业科学—作物学]

 

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