|Table of Contents|

EFFECT OF CONTINUOUS CROPPING ON CANOPY STRUCTURE AND YIELD OF SOYBEAN(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2007年06期
Page:
892-896
Research Field:
Publishing date:

Info

Title:
EFFECT OF CONTINUOUS CROPPING ON CANOPY STRUCTURE AND YIELD OF SOYBEAN
Author(s):
LI Zhi-gang; DONG Li-jie; SONG Shu-hong; XIE Fu-ti
1. Liaoning Academy of Agricultural Sciences，Shenyang 11061；
2.Inner Mongolia University for Nationalities，Tongliao 028042；
3.Shenyang Agricultural University，Shenyang，110161
Keywords:
Soybean; Continuous cropping; Canopy; Yield
PACS:
S565.1
DOI:
10.3969/j.issn.1000-9841.2007.06.016
Abstract:
Continuous cropping is one of major factors limiting soybean [Glycine max(L.)Merri.] yield.In order to discuss yield limiting factors of continuous soybean，three cropping types，including-normal-rotation(NR)，one-year-continuous cropping(OCC)and two-year continuous cropping(TCC) were adopted and the canopy structure and yield of three cropping type soybean were studied with the conventional “Layer upon layer cut method ”.Leaf area of continuous cropping soybean at different canopy layer was lower than that of normal rotation soybean and so was the branch number，pod number and pod weight，and the scope intensified with the increasing of the continuous years.Leaves distributed more rational among the upper，middle and lower layers of the canopy under NR.There were more leaves in the upper layer of canopy under OCC.The leaf area at different canopy layers of TCC decreased significantly compared to NR.The yield of OCC and TCC soybean decreased 13.6% and 38.6% compared to NR，respectively.The results suggest that the decreasing of the population quality is the key reason to the yield reducing of continuous cropping soybean.

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Last Update: 2014-10-19