覆膜棉田主要病害综合防治系列技术研究

作者1985—1988年研究结果:采用五氯硝基苯拌种可有效地防治覆膜棉田立枯病死苗.种植中抗枯萎病品种,并协调组配五氯硝基苯拌种诱发自然串珠镰刀菌对枯萎病的减轻作用和塑膜覆盖对枯萎病的生态防治作用,其综合防病效果达到高抗品种的水平.摘除棉株下部3个果枝上的棉蕾或下部3个果枝可协调棉株成铃结构,恶化发病生态位,从而使铃病明显减轻,棉花大幅度增产.

A Study on Series Technology for Integrate Control of Main Diseases of Cotton Covered with Film Mulching

During 1985-1988 the present study was conducted based on principles of systematic ecology and aimed at controlling main diseases of cotton covered with film mulching. Results showed that as for Rhizoctonia rot, dressing seeds with quintozene could control root disease and dead seedlings effectively. As for Fusarium wilt of cotton, on the basis of planting wilt-moderately-resistant varieties, seed dressing with Quintozene was used to reduce the effect of natural Fusarium moniliforme on the wilt. The integrated controlling effect reached the level of highly resistant varieties. In respect of boll diseases, removing the buds on 3 lower fruit branches or the 3 lower fruit branches can improve the boll forming structure and deteriorate the ecological situation for causing diseases, thus significantly reducing boll diseases and greatly increasing the cotton yield.