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Effect of Different Consumption of Nitrogen Fertilizer and Pest Control Methods on Production and Quality of Pakchoi(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年24期
Page:
17-20
Research Field:
Publishing date:

Info

Title:
Effect of Different Consumption of Nitrogen Fertilizer and Pest Control Methods on Production and Quality of Pakchoi
Author(s):
WANG Ai-bo; WU Hui; PAN Yi-zhan; HOU Jiang-tao; ZHANG Zhi-fang
The Academy of Landscape,Shangqiu University,Shangqiu,Henan 476113
Keywords:
Brassica campestris ssp.Chinensis L; nitrogen fertilizer; pest control methods; the numbers of leaves per plant; fresh weight; dry weight; the relative efficiency of pest control
PACS:
S 634.306+.2
DOI:
-
Abstract:
Taking a cultivated variety of Pakchio (Brassica campestris ssp.Chinensis L.) named ‘Huaguan Qinggengcai’ (for short ‘Qinggengcai’) as experiment material.In the experiment field of Shangqiu Universtity,the numbers of leaves,the fresh weight and dry weight per plant of ‘Qinggengcai’ treated with different consumption of nitrogen fertilizer and pest control methods were studied,besides,the differences of pest control effect between different methods were compared.The results showed that,the numbers of leaves per plant significantly increased as consumption of nitrogen fertilizer increased,while which treated with pesticides were significantly higher than under pests-preventing net and natural conditions (the latter two weren’t significantly different with each other).Fresh and dry weight per plant were significantly increased as consumption of nitrogen fertilizer increased,while fresh weight per plant wasn’t significantly affected by different pest control methods and the interaction of pest control methods and consumption of nitrogen fertilizer,but dry weight per plant treated with pesticides and under pests-preventing net were significantly higher than under natural conditions.The damage rates of pests weren’t significantly affected by different consumption of nitrogen fertilizer,but they were significantly affected by pest-control-methods at the same consumption of nitrogen fertilizer,which concretely were the lowest in the pests-preventing net while were the highest under natural conditions；the relative efficiency of pest control was significantly lower when treated with pesticides than under pests-preventing net,and it was the highest when plants were treated with 15 kg/667m2 nitrogen fertilizer.All above,covering with pests-preventing net and fertilizing with 15 kg/667m2 nitrogen fertilizer was the best to improve the productions and qualities of plants.

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Last Update: 2014-12-24