蔬菜缺素症的识别与挽救湖南省农科院（４１０１２５）谭荫初蔬菜是高度集约化栽培的作物，光靠土壤养分和基肥是很难满足其生长发育的。因此，首先必须识别各种蔬菜缺素症状，然后及时进行挽救，才能确保蔬菜的优质、高产、高效益。１缺氮首先在老叶上呈现淡绿色或黄色，... Identification and conservation of vegetable deficiency disease Hunan Academy of Agricultural Sciences (410125) Tan Yum Chu Vegetables are highly intensive cultivation of crops, rely on soil nutrients and basal fertilizer alone is difficult to meet its growth and development. Therefore, we must first identify a variety of vegetable deficiency symptoms, and then promptly save in order to ensure the quality of vegetables, high yield, high efficiency. 1 Nitrogen deficiency first pale green or yellow on the old leaves, ...