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阳江县的益智以大八乡为主产地,其次新洲、塘围、程村、溪头等乡亦有培植。药用为益智仁,可作芳香健胃、祛風及治嘔吐等药,又为仁丹等多种芳香清凉剂的主要原料。益智(Alpinia officinarum L.)为姜科多年生草木植物,莖高一公尺半左右。叶披針形,長約30厘米,有叶鞘及叶舌。根莖分蘖成叢狀,每年分蘖約30—40株。在1—3月间頂生穗狀花序,开花十天后开始結果,到六月充分成熟。果实近橢圓形,長約1.5厘米,果皮灰棕色。开花結果期間雨水太多会形成落花落果現象,但过于干旱亦会減产。益智在兩年生的分蘖上抽花結果,每分蘖只开花結果一次。栽培方法: (1)选地与整地:益智要求有林木蔭蔽,以40—50%的蔭蔽度較为适宜。沒有蔭蔽会使植株枯黄以至逐漸死亡,但蔭蔽过密,則分蘖慢,落花落果多而产量不高。土壤要求肥沃疏松的砂质壤土,地势宜于坡度25度以下的丘陵坡麓。
Yangjiang County’s puzzle is mainly produced in Badaxiang, followed by Xinzhou, Tongwei, Chengcun and Xitou. Medicinal for the puzzle, can be used for aromatic stomach, expelling wind and vomiting and other drugs, but also for Jennifer and other aromatic cooling agent of the main raw material. Alpinia officinarum L. is a biennial perennial herbaceous plant of Zingiberaceae that is about one meter and a half tall. Leaves lanceolate, about 30 cm, leaf sheath and ligule. Rhizome tiller into plexus, tillering about 30-40 plants per year. In January-March top spikes, flowers ten days after the start of the results, fully mature in June. Fruit nearly oval, about 1.5 cm, peel gray brown. Too much rainfall during the flowering season will result in the falling of flowers and fruits but too much drought will also reduce production. Puzzle in the biennial tiller on the flowering results, each tiller only flowering once. Cultivation methods: (1) Selection and site preparation: puzzle requires forest shade, to 40-50% shade more appropriate. Without shade will make plants yellow and gradually die, but the shade is too dense, the tiller slow, fall flowers and more fruit yield is not high. Soil requirements Loose sandy loam, suitable for slope of 25 degrees below the hillslope foothills.