{name:"fruit_type_id",fieldLabel:"成果分类",xtype:"combo",store:store,emptyText:"请选择...",displayField:"type_name",valueField:"id",selectOnFocus:true,triggerAction:"all"},
将name改成hiddenName即可
{hiddenName:"fruit_type_id",fieldLabel:"成果分类",xtype:"combo",store:store,emptyText:"请选择...",displayField:"type_name",valueField:"id",selectOnFocus:true,triggerAction:"all"},