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早春,利用大拱棚,进行西瓜与山药间作,可使西瓜与山药的收获上市时间比露地栽培提前45天以上,从而取得较高的经济效益。一、拱棚结构棚宽7米,棚中央拱高2.5米,栅长视地块而定。拱形棚架材料一般使用水泥预制件,也可用两根竹材,下端分别埋土固定,上端向里呈拱形弯曲,接头处用铁丝拧牢,形成棚架,并分别在棚中央及左右两侧竖起3行立柱,以支撑棚架。扣棚时,在拱形棚架上扣封优质塑料薄膜,塑料薄膜上面用铁丝拉紧压实即可。二、开沟整地每个大拱棚内需顺棚向开挖两个定植
Early spring, the use of large shed, watermelon and yam intercropping, watermelon and yam can make the harvest time to market more than 45 days in advance open field cultivation, resulting in higher economic benefits. First, the shed structure Shed 7 meters wide, shed central arch 2.5 meters high, depending on the length of the block may be. Arched scaffolding materials commonly used cement prefabricated parts, but also can be used two bamboo, buried at the bottom were fixed, curved arch at the top to the inside, the joint Department with steel wire twist to form scaffolding, and were shed in the center and about two Erect 3 rows of posts to support the scaffolding. When the shed, in the arched scaffolding buckle high-quality plastic film, plastic film with wire tightening compaction can be. Second, ditching and leveling Each large arch shed Shun Shing to dig two colonization