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卢龙县甘薯栽培面积2万hm~2左右,占粮食作物面积50％以上,1996年鲜薯单产水平首破2000kg。1996年全县甘薯小拱棚栽培面积4.8hm~2,产量均在37500/hm~2以上,比常规栽培增产25％以上。其中燕河镇东吴庄村胡喜成采用小拱棚栽培,平均45690kg/hm~2,比露地常规栽培增产50％。具体栽培要点是: 1 早育壮秧 3月21日伏薯育秧,品种选用增产
Lulong County sweet potato cultivation area of 20,000 hm ~ 2, accounting for more than 50% of the area of food crops in 1996, the first breakthrough in fresh potato yield 2000kg. In 1996, the cultivation area of sweet potato small shed in the whole county was 4.8hm ~ 2, and the yield was above 37500 / hm ~ 2, which was 25% more than that of conventional cultivation. Among them, Wu Xicheng, Dongwuzhuang Village, Yanhe Township, was cultivated in a small tunnel with an average of 45690kg / hm ~ 2, which increased by 50% compared with the conventional cultivation in the open field. The specific cultivation points are: 1 early nursery seedlings March 21 sweet potato seedlings, varieties of selection increase