| 不同生态型玉米生长特点的研究 |
| |
| 引用本文： | 唐永金, 陈见超, 侯大斌.不同生态型玉米生长特点的研究[J].玉米科学,1999,7(3):062-067. |
| |
| 作者姓名： | 唐永金 陈见超 侯大斌 |
| |
| 作者单位： | 绵阳农业高等专科学校 四川 绵阳 621000 |
| |
| 摘 要： | 在海拔600m处夏播玉米，对平丘紧凑型(A)、平丘平展型(B)、低山中熟型(C)、中山晚熟型(D)和高山早熟型(E)5个生态型玉米品种生长特点的研究表明：(1)D生态型的植株和穗位最高、穗高系数最大、叶数最多、单叶和单株面积最大、生育期最长、单株干物重最大，E生态型的这些值最小，其他生态型介于它们之间；(2)后期时间系数、后期干物质积累系数和后期净同化率的变化规律是E型＞A型＞B型＞C型＞D型；(3)收获指数A型＞B型、E型＞C型＞D型，分配指数B型＞C型＞A型＞Ｅ型＞D型。不同生态型玉米品种具有不同的植株生长、干物质积累和分配特点，这与各品种的地域来源、所适应的生态环境以及所处的育种阶段有关。
|
| 关 键 词： | 玉米 生态型 生长 干物质 收获指数 |
| 收稿时间： | 1998/3/18 0:00:00 |
Gorwth Characteristics of Different Ecotypes of Maize Dabin |
| |
| TANG Yong-jin; CNEN Jian-chao; HOU Da-bin.Gorwth Characteristics of Different Ecotypes of Maize Dabin[J].Journal of Maize Sciences,1999,7(3):062-067. |
| |
| Authors: | TANG Yong-jin; CNEN Jian-chao; HOU Da-bin |
| |
| Abstract: | Growth characteristics of the five ecotypes of maize that leaves are erect(A)and flat(B) for plain and hill areas and growth time is middle(C)forlow mountain area,long(D)for middle mountain aera,short(E)for high mountainarea have been studied under summer planting at an elevation of 600m.The results are as follows.
(1)The heights of plant and pistillate 4eaf place,ratio of heights of plant and pislillate place,leaf number,leaf area per leaf,leaf area per plant,growth time and the weight of dry matter per plan to D ecotype are greatest,these of E ecotype least,these of other ecotypes between D and E.
(2)Time index,accumulation index and net assimilation rate at later stage are E>A>B>C>D.
(3)Harvest index is A>B,E>C>D.Distribution index is B>C>A>E>D.
Different varieties of ecotypes of maize have different characteristics of plant growth,accumulation and distribution of dry matter because for the places where they come from,the enviroments that are good for them,and breeding phase in what they are. |
| |
| Keywords: | maize ecotype growth dry matter havest index |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《玉米科学》浏览原始摘要信息 |
| 点击此处可从《玉米科学》下载免费的PDF全文 |
|
