利川山药是独具特色的山药品种,因其独特的口感(清香绵和)和较高的药用价值而深受市场欢迎,主要生长在湖北省利川市海拔1000米左右,常年种植面积1000公顷,商品产量1.5万吨左右。抓好中后期田间管理,可以有效地防止山药早衰,达到山药高产丰收的目的。1.防涝防旱山药初花以后,往往遇多雨寡照气候,会导致土质粘重渍水,田间通透性下降,影响山药的块茎膨大。所以一定要疏通排水沟。在疏通好田块四周边沟的同时,还要顺着山药的行向疏通好厢沟,厢沟的间距一般为10米。边沟一般深度超过80厘米,宽度为40厘米左右;厢沟一般超过40厘米,深度为30厘米左右。干旱也会影响山药的生长,导致山药块茎畸形。防旱措施一般在晴天下午用抽水泵抽水或就近挑水灌根,对于较瘦弱的田块可结合抗旱每 Lichuan Yam is a unique yam varieties, because of its unique taste (Qing Xiang Mian and) and high medicinal value by the market, mainly in Lichuan, Hubei Province, about 1,000 meters above sea level, perennial planted area of ​​1,000 hectares , Commodity output 15,000 tons or so. Do a good job in field management in the late, can effectively prevent the premature senility yam, yam to achieve high yield harvest purposes. 1. Waterlogging drought Yam early flowering, often encounter rainy weather, will lead to soil sticky waterlogging, decreased permeability in the field, affecting tuber swelling yam. So we must clear the drains. While dredging good ditches all around the ditch, but also along the line to dredge yam good good ditch, ditch spacing is generally 10 meters. The general depth of the ditch more than 80 cm, a width of 40 cm; caverns generally more than 40 cm, a depth of about 30 cm. Drought also affects the growth of yam, resulting in yam tuber deformity. Drought-relief measures are generally carried out in the sunny afternoon with a pumping pump or the nearest water diversion roots, for the weaker plots can be combined with drought