浙江省自1955年扩种連作稻以来,对粮食增产起了显著作用。但随着水稻混栽程度的提高,有些地区沒有注意到輪作复种制度的合理安排,螟害有逐漸加重的趋势。可是紹兴县禹陵公社金星大队等,近年来扩种双季稻的面积虽然較大,但螟害却很輕。1962年連作晚稻的枯心率只为0.012％,白穗率只有0.029％。推究其原因,实与合理安排輪作复种制度分不开的。现将該队这方面的經驗,总結于后,供有关方面参考。 Since 1955, Zhejiang Province has expanded its production for continuous rice production, it has played a significant role in increasing grain output. However, with the improvement of the degree of rice planting, some areas did not notice the reasonable arrangement of rotation cropping system, and the stem borers tended to aggravate gradually. However, Jinling Brigade Yuling commune, Shaoxing County, etc., in recent years, the area of ​​double-crop paddy expansion, although larger, but the pest damage is very light. In 1962 even the late rice withered heart rate was only 0.012%, white spike rate of only 0.029%. Investigate the reason, the real and reasonable arrangements for crop rotation system inseparable. Now the team’s experience in this area, summed up in the later, for the relevant reference.