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Study on the Population Dynamics of Soybean Aphid in Heilongjiang Province(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年04期
Page:
614-619
Research Field:
Publishing date:

Info

Title:
Study on the Population Dynamics of Soybean Aphid in Heilongjiang Province
Author(s):
SI Zhao-sheng;  CHEN Ji-guang;  SONG Xian-dong;  GONG Xiang-yu
（Plant Quarantine and Plant Protection Station of Heilongjiang Province, Harbin 150090，China）
Keywords:
Aphis glycines;  Population dynamics;  Natural enemies
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.04.0614
Abstract:
The occurrence of soybean aphid and its natural enemies were investigated in soybean experimental plot in the area from 2011 to 2015.The results showed that the beginning date of soybean aphid was basically the same in 2011-2015, and in the middle of June, soybean aphids were observed.No matter the soybean aphid occurred sooner or later, in the beginning 25 days, the rate of plant infested reached a peak.In the year that was suitable for the occurrence of soybean aphid, the rate of plant infested reached second peak after the first peak of 15-20 d. The soybean aphid population growth rate reached the maximum value from 20-25 d after the beginning of soybean aphid, and the population growth rate of soybean aphid began to decline in about 45 d. In this study, the number of natural enemies reached the peak with the increase of soybean aphid. The initial period of natural enemies was about 15 d later than that of soybean aphid, and the final period was about 20 d earlier than that of soybean aphid, and the peak of population was 5-10 d earlier than that of soybean aphid.

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Last Update: 2017-08-14