论文部分内容阅读
蒲江县位于川西平坝边缘,主产水稻,常年栽插二十六万余亩,地势荫蔽,阳光不足,雨水多,空气湿度大,影响水稻正常生长,有利于病菌滋生,是稻瘟病的老病区。一九七○年以来,稻瘟病在平坝、丘陵先后流行,遭受叶瘟及颈瘟危害。一九七一年全县叶瘟发生九万五千亩,占水稻栽培面积的三分之一以上。由于叶瘟毁苗面积达一千五百二十亩,秋后颈瘟连片流行,损失稻谷一千万斤左右,成为全县水稻持续增产的严重障碍。县委对稻瘟病的危害极为重视,从一九七二年以来,县委领导带领科技人员,深入病区蹲点,调查病害发生规律,研究出了以
Pujiang County is located in the edge of Pingba in western Sichuan Province, the main production of rice, planting more than 260,000 acres perennial, topography shade, lack of sunlight, rain, air humidity, affecting the normal growth of rice is conducive to the growth of germs, is an old disease of rice blast Area. Since 1970, the rice blast has prevailed in Pingba and Hilly, suffering leaf blast and neck blast. In 1981, 95,000 mu of leaf blast occurred in the entire county, accounting for more than one third of the paddy cultivation area. As the leaf blast destroyed seedlings area of 1,500 mu, autumn neck blast epidemic concomitant epidemic, loss of about 10 million tons of rice, a continuous increase of rice in the county a serious obstacle. County Party Committee attaches great importance to the harm of rice blast, since 1972, the county leadership led scientific and technological personnel, in-depth ward to investigate the occurrence of disease law to study out the