氮肥对冀西北坝上地区不同种植密度下糯玉米产量的影响  

Effect of nitrogen fertilizer on yield of waxy corn under different planting density in Bashang area of northwest Hebei Province

作　　者：李雯 马琳峰 曹熙敏[1] 俞凤芳[1] 姚泽英 刘贵河[1] 吕爱枝[1] LI Wen;MA Lin-feng;CAO Xi-min;YU Feng-fang;YAO Ze-ying;LIU Gui-he;Lü Ai-zhi

机构地区：[1]河北北方学院,河北张家口075000

出　　处：《饲料研究》2021年第15期109-112,共4页Feed Research

基　　金：财政部和农业农村部:国家现代农业产业技术体系;河北省重点研发技术项目“玉米抗逆、抗病、节水、专用、易机收种质资源创制及育种技术研究(项目编号:16226323D-8)”。

摘　　要：试验探究氮肥对不同种植密度下糯玉米株高、茎粗、叶面积指数、鲜穗产量、干草产量的影响。研究以"万糯3号"为试验材料,设置2个密度,分别为67500株/hm^(2)、90000株/hm^(2)。9个施氮处理,分别为N0(0 kg/hm^(2))、N1(141.75 kg/hm^(2))、N2(193.50 kg/hm^(2))、N3(245.25 kg/hm^(2))、N4(297.00 kg/hm^(2))、N5(348.75 kg/hm^(2))、N6(400.50 kg/hm^(2))、N7(452.25 kg/hm^(2))、N8(504.00 kg/hm^(2))。结果显示,"万糯3号"在种植密度67500株/hm^(2)、施氮量452.25 kg/hm^(2)时,干草产量最高(16.61 t/hm^(2)),鲜穗产量高达16.64 t/hm^(2)、株高207.40 cm、茎粗2.2 cm、持绿性23%、叶面积指数2.47。其次为90000株/hm^(2)、不追肥时,干草产量16.14 t/hm^(2)、鲜穗产量9.67 t/hm^(2)。研究表明,"万糯3号"在冀西北坝上地区时,种植密度67500株/hm^(2)、施氮量452.25 kg/hm^(2)时,干草产量表现最高、鲜穗产量也表现较好。The experiment explored the effect of nitrogen fertilizer on plant height,stem diameter,leaf area index,fresh ear yield and hay yield of waxy corn under different planting densities.The study used’Wannuo No.3’as the test material,and set two densities,67500 plants/hm^(2)and 90000 plants/hm^(2),respectively.Nine nitrogen treatments were N0(0 kg/hm^(2)),N1(141.75 kg/hm^(2)),N2(193.50 kg/hm^(2)),N3(245.25 kg/hm^(2)),N4(297.00 kg/hm^(2)),N5(348.75 kg/hm^(2)),N6(400.50 kg/hm^(2)),N7(452.25 kg/hm^(2))and N8(504.00 kg/hm^(2)),respectively.The results showed that when the planting density of’Wannuo 3’was 67500 plants/hm^(2)and the nitrogen application rate was 452.25 kg/hm^(2),the hay yield was the highest(16.61 t/hm^(2)),the fresh ear yield was as high as 16.64 t/hm^(2),the plant height was 207.40 cm,the stem diameter was 2.2 cm,the greenness was 23%,and the leaf area index was 2.47.Followed by 90000 plants/hm^(2)without top dressing,the yield of hay was 16.14 t/hm^(2)and the yield of fresh ears was 9.67 t/hm^(2).The experiment indicates that in Bashang area of northwest Hebei,’Wannuo No.3’has the best hay yield and fresh ear yield when the planting density is67500 plants/hm^(2)and the nitrogen application rate is 452.25 kg/hm^(2).

关 键 词：氮肥 种植密度 糯玉米 产量 

分 类 号：S816[农业科学—饲料科学]