多样性混合间栽模式对水稻光合作用的影响  

Effects of Diversity-Interplanting Models on Rice Photosynthesis

作　　者：何平 杨楠 尚刚林 张文龙 李德雄 张锐 苏正亮 李勇成 王云月[1] 韩光煜 HE Ping;YANG Nan;SHANG Gang-lin;ZHANG Wen-long;LI De-xiong;ZHANG Rui;SU Zheng-liang;LI Yong-cheng;WANG Yun-yue;HAN Guang-yu(College of Plant Protection,Yunnan Agricultural University/Key Laboratory of Agricultural Biodiversity and Disease Control of Ministry of Education,Yunnan Kunming 650201,China;Agricultural Sciences Academy of Honghe,Yunnan Mengzi 661100,China)

机构地区：[1]云南农业大学植物保护学院/农业生物多样性与病害控制教育部重点实验室,云南昆明650201 [2]红河州农业科学研究院,云南蒙自661100

出　　处：《西南农业学报》2021年第10期2117-2122,共6页Southwest China Journal of Agricultural Sciences

基　　金：国家自然科学基金项目“间栽系统中不同水稻品种组配控制稻瘟病的遗传作用机理研究”(31800451);云南省博士后定向培养资助项目;云南省博士后科研基金项目。

摘　　要：【目的】明确多样性混合间栽模式对水稻光合作用的影响,为水稻多样性混合间栽的进一步推广应用提供有利依据。【方法】选用水稻品种冈优157和黄壳糯,在多样性混合间栽(包括里行和边行)和净栽2种种植模式下,测定其叶绿素相对含量SPAD值和光合指标值,并调查了穗颈瘟发生为害情况及水稻农艺性状。【结果】多样性混合间栽模式下冈优157里行的SPAD值显著高于其边行以及净栽处理,黄壳糯在2种种植模式下的SPAD值则无显著差异。多样性混合间栽模式下冈优157里行的净光合速率显著低于净栽处理,和边行无显著差异;蒸腾速率、气孔导度和胞间CO_(2)浓度在2种种植模式下均无显著差异;黄壳糯的净光合速率、蒸腾速率、气孔导度和胞间CO_(2)浓度在间栽和净栽模式下均无显著差异。冈优157和黄壳糯在多样性混合间栽和净栽种植模式下的水分利用率均无显著性差异。黄壳糯的稻瘟病病情指数多样性混合间栽模式(2.79±0.86)显著低于净栽(43.65±6.11);其株高在间栽模式(138.93±2.91)cm显著低于净栽(152.07±2.27)cm;而黄壳糯的分蘖数净栽模式(9.75±0.59)显著高于间栽(7.04±0.73)。冈优157的病情指数、株高和分蘖数在2种种植模式下均无显著差异。多样性混合间栽模式下黄壳糯的折合产量(6.23 t/hm^(2))显著高于净栽模式(4.50 t/hm^(2));冈优157在2种种植模式下的折合产量无显著差异。【结论】多样性混合间栽模式下主栽品种冈优157的叶绿素含量显著升高,光合速率显著降低,其他光合特征值无显著变化,病害发生程度均为轻发生;间栽品种黄壳糯的光合表现在2种模式下无显著差异,而黄壳糯的病害发生程度在多样性间栽模式下显著降低;多样性混合间栽模式下水稻产量显著升高。【Objective】The purpose of this paper was to clarify the effect of diversity mixed interplanting mode on rice photosynthesis,and provide a favorable basis for the further application of diversity mixed interplanting in the field.【Method】The rice varieties Gangyou 157(main planted variety)and Huangkenuo(interplanted variety)were selected,and their relative chlorophyll content SPAD values and photosynthesis were measured under the mixed interplanting and mono-planting modes,and the occurrence and damage of rice blast and the agronomic characteristics of rice were investigated.【Result】When Gangyou 157 in the interplanting mode,the SPAD value of the inner row was significantly higher than that of the outer row and mono-planting treatments.There was no significant difference in the SPAD value of Huangkenuo under the two planting modes.The net photosynthetic rate of Gangyou 157 in the interplanting mode was significantly lower than that of the mono-planting treatment(decrease by 14.36%),and there was no significant difference when compared with the outer row.The transpiration rate,stomatal conductance and intercellular CO_(2) concentration were significant differences in all treatments.The net photosynthetic rate,transpiration rate,stomatal conductance and intercellular CO_(2) concentration of Huangkenuo were not significantly different under the interplanting and mono-planting modes.Gangyou 157 and Huangkenuo had no significant difference in water use efficiency under interplanting and mono-planting modes.The rice blast disease index of Huangkenuo under the interplanting mode(2.79±0.86)was significantly lower than that of the mono-planting(43.65±6.11),and its plant height under the interplanting mode(138.93±2.91)cm was significantly lower than that of the mono-planting(152.07±2.27)cm,and the number of tillers of Huangkenuo under the mono-planting mode(9.75±0.59)was significantly higher than that of the interplanting(7.04±0.73).There was no significant difference in disease index,plant height and tille

关 键 词：水稻 多样性混合间栽 SPAD值 光合作用 稻瘟病 

分 类 号：S511[农业科学—作物学]