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1974年我们利用种春薯余下的薯苗,进行麦后复种红薯试验,茎叶解决猪饲料,大薯块作食用,小薯块作饲料,从试验结果看,基本上是成功的。薯块最重的有3.5两,单株平均结薯重量,因品种不同,高的1.1～1.12斤,低的0.29～0.466斤。共试插0.8亩,折合亩产薯块1,426斤,以五斤折一斤粮计,合粮285.3斤。复种的方法是:小麦收割后翻地,用犁开沟,行距1.1米,穴距30厘米,于7月25日
In 1974, we used the remaining potato seedlings of spring potatoes to test the multiple cropping of sweet potatoes after they were harvested. The stems and leaves were used to solve the problems of pig feed, big potato for food, and small potato tuber for feed. From the experimental results, it was basically successful. The tubers have the heaviest 3.5 two, the average tuber weight per plant, due to different varieties, high 1.1 to 1.12 pounds, low 0.29 to 0.466 pounds. A total of 0.8 acres of test-breaking, equivalent to 1,426 pounds per mu yield of potato, a pound of food to five pounds, a total of 285.3 pounds of grain. The method of multiple cropping is: turning the wheat after harvesting, plow ditching, row spacing 1.1 meters, 30 cm hole distance, on July 25