GUO Yong-xia,WU Hai-yan,FAN Wen-yan,et al.The Studies on the Laws of Occurrence of Sclerotiniose Blight of Rice Stem Rot[J].HEILONGJIANG AGRICULTURAL SCIENCES,2002,(02):8-10.[doi:10.11942/j.issn1002-2767.2002.02.0008]
寒地水稻秆腐菌核病发生规律的初步研究
- Title:
- The Studies on the Laws of Occurrence of Sclerotiniose Blight of Rice Stem Rot
- 文章编号:
- 1002 -2767(2002)02 -0008 -03
- Keywords:
- rice ; sclerotiniose blight of rice stem rot ; nalataea sigmoideam(cav .); occurrence rule
- 分类号:
- S435 .111.4
- 文献标志码:
- A
- 摘要:
- 水稻秆腐菌核病的发生程度与温湿度有关, 在15 ℃～ 30 ℃范围内温度越高, 越有利于病菌的侵入, 潜育期也越短。在25 ℃条件下, 保湿24 h 病菌就能完成侵入, 保湿时间越长, 侵染率越高, 发病程度越重。在黑龙江省密山地区于7 月20 日前后开始发病, 随时间推移, 病穴率、病株率和病情指数均呈对数曲线形式增长。7 月下旬至8 月中旬病害主要是水平方向扩展, 8 月中、下旬病害主要是垂直方向扩展。在病稻区采用连根拔除或齐泥收割及单灌单排是有效的防治措施。
- Abstract:
- The development of sclerotiniose blight of rice stem rot relates to temperature and moisture .Thehigher the is temperature (at the range of 15 ℃～ 30 ℃), the more advantageous is the infection of disease germand the shorter is the latent period.At 25 ℃, disease germ can finish infection if it is moistened 24 hours .Thelonger is the moist time , the higher is the infection efficiency and the heavier is the development of outbreak .It begins to break out on July 20 or so at Mishan city Heilongjiang province .With the time going on , diseasehole , diseased plant and disease index increase in the form of logarithmic curve .Disease is mainly horizontallyspread at last ten days of July to the middle ten days of August .At August 11 to 31 , disease is mainly verticallyspread .The effective control method is eradication , reaping at the level of mud or single irrigation singledrain .
参考文献/References:
[ 1] 谭文辉, 李会议, 越景峰, 等.小粒菌核病对水稻危害程度的调查及防治对策[ J].现代化农业, 1999 ,(11):19-20.
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备注/Memo
收稿日期:2001-11 -20