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人称“西瓜王”的神池县贺职乡赵官庄村农民刘天保,在多年实践的基础上,总结出“打坑覆膜种瓜法”,西瓜
People called “watermelon king” Shenchi county township Zhao Guanzhuang village farmers Liu Tianbao, based on many years of practice, summed up the "