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研究表明,在水稻纹枯病、二化螟危害的总株中,纹枯病病株占60.50%、二化螟虫伤株占12.80%、纹枯病、二化螟复合危害株占25.87%、白穗占0.85%;病株中有28.86～32.41%与虫伤株复合危害,虫伤株中有60.67～77.25%与病株复合危害.纹枯病病株、二化螟虫伤株和病、虫复合株的产量损失分别为:11.76%、14.87%和18.94%.复合株的产量损失大于另二者的损失,小于且等于二者之和的71.12%.在纹枯病、二化螟造成的总产量损失中,病株、虫伤株、复合株和白穗依次占:49.15～57.36%、6.01～6.92%、28.78～29.48%和5.79～6.02%.
The results showed that sheath blight disease accounted for 60.50% of the total strains damaged by rice sheath blight and stem borer, 12.80% for stem borer, and 25.87% for sheath blight and stem borer, White ear accounted for 0.85%; 28.86 ~ 32.41% of diseased plants were combined with insect pest strains, and 60.67-77.25% of them were combined with diseased plants. The yield loss of the composite strain was 11.76%, 14.87% and 18.94%, respectively. The yield loss of the composite strain was greater than 71.12% of the other, less than or equal to the sum of the two. Among the total yield losses, the diseased, pest insects, composite and white spikes accounted for 49.15-57.36%, 6.01-6.92%, 28.78-29.48% and 5.79-6.02%, respectively.