THE BIOLOGICAL CHARACTERISTICS OF COMMELINA COMMUNIS LAND ITS COMPETITION IN SOYBEAN FIELD(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2003年03期

Page:

230-233

Research Field:

Publishing date:

Info

Title:

THE BIOLOGICAL CHARACTERISTICS OF COMMELINA COMMUNIS LAND ITS COMPETITION IN SOYBEAN FIELD

Author(s):

Hu Fan 　Fu Ying chun 　Piao Ying 　Wang Hongw u 　Li Weiping

Hejiang Agricultural Inst itute of Heilongjiang Academy of Agricultural Sciences , Jiamusi 154007

Keywords:

Commel ina communis L ; Biological characteristics ; Competi tion

PACS:

S 451.0 S565.1

DOI:

10.11861/j.issn.1000-9841.2003.03.0230

Abstract:

The g row th and the development of Commelina communis L and its competition w ith soybean w erestudied in this paper .The seeding emergence occurs in the middle of May ,w hile it s peak emergence is in the endof the month .The peak period of the vegetative grow th is in the end of July .The depth of 5cm f rom the seeds tothe soil surface is favorable for the seed energence , and no seed emergence w as investig ated in the depth of20cm .As the density of Commelina communis L is increasing in the soybean field , the tension fo r its individualand i ts compet ition w ith soybean are in evidence .For the competi tion f rom the w eed , the soybean yield decreased.With the statistic method of SSR , the result for two years show ed that the decreasing rate of the soybeanyield (y)w as 17 %w hen the density(x)reached the level of 40 plant/m2 .Thei r regression function is asfollowed :y =3 .7185 +0 .6481x , r =0 .9794 .

References:

1 　[ 美] B .特鲁洛夫.杂草科学的研究方法[ M] .北京:科学出版社,1991 , 50 -64.

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Common functions