蔺草黄斑病的成因及其控制技术探讨

Discussion on Causes and Control Technology for Macular Disease of Schoenoplectus Trigueter

多年的调查、观测、试验和研究结果表明:蔺草黄斑病5月中旬初见,6月上旬后盛发,6月中旬进入发病高峰。草茎个体生育期45～50d是优质长草。受肥、水、气候等不良环境因素影响,草茎伸长缓慢,并且不断成熟老化,抗性逐渐减弱,导致黄斑病的发生,所以是一种生理衰老造成的生理性病害。控制黄斑病的关键是通过综合技术措施压低发病率,如合适的群体、壮健的个体、良好的环境条件,通过促根、壮茎等措施提高抗性,延缓生理衰老和适时喷施药物等。喷施30%爱苗EC能够有效控制黄斑病的发生,防治效果为53.4%～94.5%,平均为68%。

Years of investigation, observation, experiment and research show that Schoenoplectus trigueter macular disease has shown initial signs in mid-May, develop rapidly in early June, and enter the peak period in mid-June. Individual stem, 45-50d period is a high-quality long grass. Due to the fertilizer, water, climate and other adverse environmental factors, the stem elongation slows down, it is maturing and aging continuously, and its resistance gradually weakened, leading to the occurrence of macular disease, it is a physiological aging disease caused by the physiologic. The key for the control of the macular disease is to adopt some comprehensive technical measures such as the appropriate groups, healthy individuals, and good environmental conditions, through the root inducing, stem strengthening and other measures to improve the resistance and delay the physiological aging, and timely spraying drugs. Spraying of 30% Ai-miao Ec can be effective in controlling macular disease, the control efficiency was 53.4%-94.5%, with an average of 68%.