不同土壤湿度对玉米生长发育的影响  

Effects of Different Soil Moisture on Maize Growth Based on Field Trials

作　　者：李金云 张辉 孙守军[2] 张立群 姜丽霞[2] 

机构地区：[1]海林县气象局,黑龙江海林157100 [2]黑龙江省气象科学研究所 [3]龙江县气象局

出　　处：《安徽农学通报》2012年第8期38-41,共4页Anhui Agricultural Science Bulletin

基　　金：公益性行业(气象)科研专项资助项目(GYHY201106026;GYHY200906019)

摘　　要：以黑龙江省哈尔滨玉米主栽品种久龙8为试材,采用自然条件下对比观测的方式开展玉米田间试验,研究分析不同土壤湿度对玉米生长发育的影响。结果表明:不同的土壤湿度对玉米生长发育的影响存在差异,玉米发育进程、叶面积、植株干物质对不同土壤湿度的反应不同。玉米全生育期内不同土壤相对湿度的偏差在±5%之间不会对玉米发育进程造成差异。玉米叶面积、植株干物重对不同土壤湿度反应明显,土壤相对湿度高于70%,尤其中层(30～50cm)土壤相对湿度在80%以上,土壤水分适宜,对叶面积增加为正效应作用,且对玉米干物质增加和玉米籽粒灌浆均有利,可使玉米果实重量出现一定程度的增加。Main maize variety（Jiulong 8） in Heilongjiang Province was treated with the contrast observation under natural conditions in the maize field,and the effect of different soil moisture on maize growth was analyzed.The results showed that different soil moisture had different effects on maize growth,response of maize development date,leaf area and dry matter was not the same to different soil moisture.Soil moisture less than ±5% deviation didn＇t cause difference of maize development date in maize whole growth stage,Different soil moisture had a significant effect on leaves area and dry weight,Soil moisture was above 70%,in particular,middle layer（30~50cm） soil moisture was above 80%,which was suitable for maize and had positive effect on the increase in leaf area,Suitable soil moisture was beneficial to the increase in dry matter and maize grain,which can result in the maize fruit weight increase.

关 键 词：玉米 土壤湿度 叶面积 干物质 

分 类 号：S513[农业科学—作物学]