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1)  Cotton diseases and insect pests
棉花病虫害
2)  early season pest of cotton
棉花苗期病虫害
3)  cotton pests
棉花害虫
1.
Focal research points,the main points of representative in different decades of cotton pests research fields were reviewed and evaluated.
汇总了我国棉花害虫研究领域不同年代代表性学者的研究重点、主要论点,并进行了点评。
4)  cotton pest
棉花害虫
1.
Expert system is the central part which was constructed under 3 cotton cultural areas including 13 sub systems and about 2 000 rules for the different cotton growth stages management of cotton pests in Nantong area.
南通地区棉花害虫综合管理专家系统(CPIMES)由三部分组成:专家系统(知识库),信息系统(数据库)和模型系统(模型库)。
5)  cotton insect pests
棉花虫害
1.
In this paper, by using computer vision technology, danger degree of cotton insect pests was automatically measured based on inside hole and irregular edge of cotton leaves.
采用计算机视觉技术 ,根据棉花叶片的孔洞及叶片边缘的残缺 ,来测定棉花虫害的受害程度。
6)  cotton disease
棉花病害
1.
Morphological feature extraction for cotton disease recognition by machine vision;
机器视觉识别棉花病害中的形态特征提取
2.
The progresses of cotton disease research in the recent 50 years which mainly focused on cotton Fusarium wilt and cotton Verticillium wilt were reviewed.
以棉花枯、黄萎病为主,就我国近50年来,在棉花病害研究方面取得的进展做了较详细的总结。
补充资料:棉花病害和虫害(cotton diseases and insect pests of cotton)
 

棉花病害和虫害(cotton diseases and insect pests of cotton)

中国仅枯萎病和黄萎病为害,每年损失皮棉7.5-10万吨。

已记载的棉病有40多种,其中苗期和铃期病害比较普遍; 枯萎病和黄萎病在不少地区已造成较大损失,茎枯病在低温、多雨年份常突发流行,红叶茎枯病在高温、干旱和土壤瘠薄地区引起生理性早衰;角斑病主要在海岛棉上发生。

中国棉区的苗期病害多发生在4月至5月间,发病率一般在50%以上,死苗率为5-10%;已发现的棉苗病害有20多种,主要病原菌有:立枯病Rhizoctonia solani、炭疽病Glomerella gossypii、红腐病Fusarium spp.、猝倒病Pythium aphanidermatum, P.debaryanum、黑根腐病Thielaviopsis basicolaol、白绢病Sclerotium rolfsii和枯腐病Macrophomina phaseoli等。叶病为害棉苗的子叶、真叶和茎,严重时茎顶端和叶片凋枯脱落。主要病原菌有:轮纹斑病Alternaria spp.、茎枯病Ascochyta gossypii、疫病Phytophthora boehmeriae、褐斑病Phyllosticta malkoffii, P.gossypina、印度炭疽病Colletotrichum indicum和角斑病Xanthomonas campestris pv malvacearum等,炭疽病和红腐病菌也为害子叶。枯萎病的发病始期为子叶期,发病盛期在现苗前后;黄萎病发病始期在3-5片真叶期,发病盛期在花蕾期。

中国的棉花虫害有300余种,比较常见的有30余种,北部特早熟棉区是棉蚜、棉铃虫;西北内陆棉区是棉长管蚜Acyrthosiphon gossypii、黄地老虎Euxoa segetum、盲椿Adelphocoris spp.及Lygus spp.和棉铃虫;黄河流域棉区是棉蚜、棉铃虫、地老虎、盲椿、叶螨Tetranychus spp.、玉米螟Ostrinia palustralis、小造桥虫Anomis flava和红铃虫。长江流域棉区是红铃虫、叶螨、盲椿、棉蚜、棉铃虫、地老虎、棉叶蝉Empoasca biguttula和蜗牛Fruticicola ravida;华南棉区为金刚钻、红铃虫、棉铃虫、棉叶蝉和红椿Dsydercus cingulatus。

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