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Damage Rate and Spatial Distribution Type of Etiella zinckenella on Ammopiptanthus mongolicus in Different Habitats(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年24
Page:
108-111
Research Field:
Publishing date:

Info

Title:
Damage Rate and Spatial Distribution Type of Etiella zinckenella on Ammopiptanthus mongolicus in Different Habitats
Author(s):
LI Xueting; YANG Yichun; ZHANG Dazhi; MU Tianxing; YU Fengmei; ZHOU Yue
(College of Life Science，Ningxia University，Yinchuan，Ningxia 750021)
Keywords:
Ammopiptanthus mongolicus; Etiella zinckenella; seed pests; damage rate; spatial distribution pattern
PACS:
-
DOI:
10.11937/bfyy.201624027
Abstract:
Etiella zinckenella is one of main pests of Ammopiptanthus mongolicus.Taking the desert landscape in Ningxia Lingwu Baijitan Nature Reserves as the background，four plots of A.mongolicus lands with the habitat types of natural growing (Yangchangwan plot，YCW；Zaoquan plot，ZQ) and artificial planting (Tiangshuihe plot，TSH；Ma′anshan plot，MAS) were selected as study sites to investigate the damage rate and its spatial distribution type of E.zinckenella.The results showed that larva individual and damage rate of E.zinckenella in MAS was the highest (2.015 individuals per pod，82.83%)，followed by the TSH (1.423 3 individuals per pod，64.83%) and YCW (1.218 3 individuals per pod，59.83%).ZQ was the lowest (0.558 5 individuals per pod，32.00%).Artificial planting habitats were significantly higher than natural growing habitats.The individual number and damage rate of E.zinckenella was positively correlated with the density of A.mongolicus.Based on multiple stepwise regression analysis，damage rate were positively correlated with the length，breadth and number of seed of per pod.Based on frequency distribution indices，aggregation analysis indices and regression analysis showed that spatial distribution pattern of E.zinckenella larvae were belong to aggregating distribution regardless of in artificial planting habitats or natural growing.The Iwao model of larvae of E.zinckenella was M*=1.040 66+0.569 02M （R=0.925 1），indicated that basic composition of the E.zinckenella distribution was individual population.And the different individual had mutual affinity with each other.

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Last Update: 2017-03-09