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河南省小麦 纹枯病的发生可划 分为 5 个 时期,即始 发期(11 月中下旬 )、缓慢增长 期(11 月下旬至 12 月下旬)、越冬停滞期(12 月下旬至 2 月中下旬)、盛发期(2 月下旬至 4 月下旬)和稳定期(4 月下旬以后)。小麦纹枯病发生的有利条件是秋冬 气温高,春季降雨多;播期早,播 量大;偏施氮肥,浇水 次数多。对河 南省生产上大面 积推广的小麦品种 抗性鉴定和评 估结果表 明,绝大多 数品种表 现高感和 中感,少数品种表现中抗,无免疫和高抗品种。通过几年研究和探索,建立了河南小麦纹枯病综合防 治技术规程,主要 内容包括:推广抗 性较好的丰产品种, 适当压缩 高感品种 种植面积;增 施有机肥 和磷钾肥, 避免偏施 氮肥;适期适量播种; 药剂处理种子,减 少秋苗发 病基数;合 理灌水、追肥, 控制群体 密度和旺 长;春季及时喷药防治等。
The occurrence of wheat sheath blight in Henan Province can be divided into five periods, namely, the initial period (late November), slow growth period (late November to late December), winter overdue (late December to mid-February Late), Shengfa period (late February to late April) and stable period (after late April). Wheat sheath blight occurs favorable conditions of autumn and winter high temperature, spring rainfall; sowing early, sowing large; partial nitrogen fertilizer, watering frequency. The identification and evaluation of resistance to wheat cultivars promoted on a large scale in Henan Province showed that the majority of cultivars showed high and medium susceptibility, and a few cultivars showed moderate resistance, no immunity and high resistant varieties. Through several years’ research and exploration, the technical regulation on integrated control of wheat sheath blight in Henan was established. The main contents include: popularizing high-yielding varieties with good resistance, compressing the planting area of high-sensitive varieties appropriately; adding organic fertilizer and phosphorus-potassium fertilizer to avoid Partial nitrogen fertilizer; suitable amount of sowing; pharmaceutical treatment of seeds, reducing the incidence of autumn seedlings; reasonable irrigation, top dressing, population density and prosperity; spring spraying in time control.