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File: D:\wwwroot1\alipdf.com\app\core\DS_Controller.php
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Function: __construct
File: D:\wwwroot1\alipdf.com\app\core\DS_Controller.php
Line: 175
Function: __construct
File: D:\wwwroot1\alipdf.com\app\controllers\Search.php
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Function: __construct
File: D:\wwwroot1\alipdf.com\index.php
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Function: require_once
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1前言 由于菜篮子工程的实施，促进了栽培技术的进步，各种保护设施的 大发展，使多种蔬菜实现了周年生产，周年供应，出现了供大于求的局 面。随着人们生活水平的提高和保健意识的增强，消费由数量型向质量 型转变，要求食物回归大自然。基于此，...
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