| 1. | After collecting and analyzing several typical crops symptoms of the deficient elements ( apple , wheat , corn , tomato , cucumber ) , we founded a system which can diagnose the deficient elements of these crops and provide some fertilizing plans for them combining the expert system knowledge 该研究在分析和整理了几种典型农作物(苹果、小麦、玉米、番茄、黄瓜)缺素症状的基础上,利用专家系统的有关知识,对这几种作物的缺素情况进行了诊断,并且有针对性地给出了配方施肥方案。 |