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在日本长崎县,马铃薯一年两作。春作于六月中下旬收获,秋作于八月下旬栽植。从春作收获至秋作前,正值夏季高温季节,田间处于空闲状态。作者从1979～1981年探讨了马铃薯连作的最大障碍疮痂病和
In Nagasaki, Japan, potatoes are made twice a year. Spring harvest in late June, autumn planting in late August. Harvesting from spring to autumn before, coincided with summer hot season, the field is idle. The author from 1979 to 1981 explored the potato with the biggest obstacle to crop scab disease and