宜城县璞河公社护洲大队,历年种植棉花1,500亩左右,全部为麦棉两熟耕作制。由于人多地少,无法轮作换茬,加之以往不重视种地养地。虽然化肥施用量不断增加,但结果地还是越种越瘦,棉粮产量越种越低。1966—1976年,棉花总产下降36.5%, Yicheng Pu River Commune Guard Island Brigade, calendar year planting about 1,500 acres of cotton, all cotton and cotton farming system. Due to the small number of people, can not be rotated for stubble, combined with previous emphasis on farming to support the land. Although the amount of chemical fertilizer is continuously increasing, the result is still more thin and thinner, and the yield of cotton grain is lower and lower. From 1966 to 1976, the total cotton output dropped by 36.5%