土壤鹽分和鈉離子累積太高為大村鄉化學栽培葡萄發育不良之主要原因;採行有機栽培將近一年之後,土壤有機質含量增加,蚯蚓增多,土壤逐漸鬆軟,土壤鹽分和交換性鈉明顯降低,已經酸化的土壤pH再度上升,有效磷往下層土壤移動,有利於葡萄之正常生長。但開始時仍宜採行準有機農法,直到技術熟練之後才將化學肥料和低毒性化學農藥完全放棄。施肥方面可以微生物油粕肥和一些土壤改良劑做基肥,並以油粕液肥或青草液肥做追肥,再配合灌施或噴施胺基酸、腐植酸、海草精、微量元素等。病蟲害防治以糖醋液和木醋液做主體,再酌量添加蒜頭、辣椒、魚腥草、酒、樟腦油等,即可控制多數病蟲害。
Accumulation of high amounts of salts and sodium in the top soils is the main cause of the poor growth of grapevine in the chemical plots at Tatsuen. After conducting organic farming practices for about one year, the organic matter and earth worm in the organic farming plots had greatly increased, the soils had become soft and livelily, the salts and sodium had largely decreased, soil pH went up again, and the available phosphorus moved down into the subsoil to become more helpful to the normal growth of the grapevine. However, it is recommended to start from the sub-organic way of farming for your grapevine before you fully master the organic farming methods for being able to completely cut off the chemical fertilizers and chemical pesticides. Enzymatic plant oil waste compost combined with some suitable soil amendments is a suitable basal organic manure for grapevine, and the enzymatic plant oil waste and rice bran liquid or the enzymatic grasses liquid is a good source of nutrition for topdressing. Besides the amino-acidified fish intestine liquid, humid acid, and kelp meal can be combined with fermented sugar-vinegar solution or rice hull smoke liquid for being used as a foliar spray or soil injection. Fermented sugar-venegar solution and rice hull smoke liquid are the two main natural material for the control of grapevine pest. The extracted liquid from garlic and hot pepper, wine, and camphor oil are recommended to be added to the above solution or liquid to increase the effect of pest control when it is necessary.
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