2.3.1 green leafy vegetables (green leafy vegetables) vegetable food source than that of humans. Because of the essential elements for many of the body, such as calcium, iron, phosphorus, carbohydrates and vitamin variety.The vegetable is also important products with high economic value in various industries such as processing, vegetable, seed production, agriculture. Products (food, food world2554), green leafy vegetables, there are plenty of various kinds, such as Chinese cabbage, kale, morning glory, etc. the general use of eating the leaf stem. A short circuit in the cultivation of plants can be grown throughout the year long.The plants need water. In the cultivation of fertilizer to add nutrients. Fertilizer application in vegetable leaves are mainly focused on fertilizer with high nitrogen. (article, vegetables agricultural database2554) also use pesticides to prevent and get rid of diseases, insect pests, วัชพืชต่างๆ to achieve higher productivity and the beauty of the product to market.
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