大面积稻田病虫优化防治技术的研究 |
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引用本文: | 刘年喜,唐会联,刘若书,胡立冬.大面积稻田病虫优化防治技术的研究[J].华南农业大学学报,2000,26(4):289-292. |
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作者姓名: | 刘年喜 唐会联 刘若书 胡立冬 |
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作者单位: | 1. 湖南省植保植检站,湖南长沙 410005 2. 桃江县植保植检站,湖南桃江 413400 |
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基金项目: | 湖南省科技厅科技攻关项目,977KY1001, |
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摘 要: | 1997~1999年,在对湖南桃江县水稻主要病虫不同年度的灾变特点和病虫发生新动向调查的基础上,筛选出大面积稻田病虫优化防治技术,即县域统防,社区统治,分田施治,依据病虫发生的特征制定防治对策.初步筛选出一批低残留、高防效、有利保护天敌的新农药.采用优化防治技术与依据传统经验进行防治的方法相比,可节省防治费用21.31%,增加单产44 0 kg/hm2.
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关 键 词: | 水稻 病虫害防治方法 最佳化 |
修稿时间: | 2000-06-23 |
Optimal Techniques for the control of Large Scale in Paddy Field Rice Diseases |
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Abstract: | The
observation on the structure of protocorm of Cymidium sinense shows that inner structures
of protocorm and rosette protocorm are similar although their outer forms are different.
Buds occur on the protocom and node and end of rosette protocom. Embryoid-like structure
is formed by shoot apical meristem and root apical meristem and it is similar with seed
embryo. According to development and structure, protocom and rosette protocom is
considered as a vegetative propagational organ. In addition, the large crystal cells can
be observed in the leaf primordia of Cymidium sinense. |
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