【摘要】 RSPM-1是一个用于连作早稻纹枯病预测和药剂控病管理的系统动态模型。该模型由早稻生长、病情进展预测、作物受害损失估计和用药管理决策四个子模型组成。组装成的程序系统,以早稻栽插期、氮肥用量、气象条件、起始病情等为驱动变量,在微机上运转后,打印出各期病情、稻谷减收率、应采取的防治决策和所得纯收益。更多还原

【Abstract】 REPM-I is a system dynamic model for forecasting and fingicide controlling management of rice sheath blight(RSB) in continuous cropping of early season rice. The model consists of 4 submodels: rice growth. disease development prediction, assessment of loss caused by RSB, application of fungicide management decision. In program system of constructed RSPM-1, rice transplanting period, nitrogenous fertilizer application, meteorological conditions and initial disease index were regarded as driving variables. Being run on microcomputer, the need for disease index at every period, percentage of rice reduction, application of control measures and net benefit were printed.更多还原