为什么wordpress只在第二个帖子页面显示我的帖子（较旧的帖子链接）？

Question

当我访问我的博客页面时，我唯一看到的是链接“显示较旧的帖子”。当我点击它并转到第二页时，所有帖子都会正确显示。为什么第一页上什么都没有？

链接： http://www.solar-sell.eu/projecten/

代码：

            <div class="content-bar">                     
            <?php
            $limit = get_option('posts_per_page');
            $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
            query_posts('showposts=' . $limit . '&paged=' . $paged);
            $wp_query->is_archive = true;
            $wp_query->is_home = false;
            ?>
            <!-- Start the Loop. -->
            <?php if (have_posts()) : while (have_posts()) : the_post(); ?>  

            <!-- Test if the current post is in category 2. -->
             <?php if ( in_category('2') ) { ?> 

                    <!--post start-->
                    <div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
                        <h2 class="post_title"><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php printf(esc_attr__('Permalink to %s', 'black-bird'), the_title_attribute('echo=0')); ?>"><?php the_title(); ?></a></h2>
                        <div class="post_content">
                            <?php if (has_post_thumbnail()) { ?>
                                <a style="float: right;" href="<?php the_permalink(); ?>">
                                    <?php the_post_thumbnail('post_thumbnail', array('class' => 'postimg')); ?>
                                </a>
                            <?php } else { ?>
                                <?php if ((function_exists('has_post_thumbnail')) && (has_post_thumbnail())) { ?>
                                    <?php blackbird_get_thumbnail(300, 120); ?>
                                <?php } else { ?>
                                    <?php blackbird_get_image(300, 120); ?> 
                                    <?php
                                }
                                ?>
                                <?php
                            }
                            ?>  
                            <?php the_excerpt(); ?>
                            <div class="clear"></div>
                            <?php if (has_tag()) { ?>
                                <div class="tag">
                                    <?php the_tags(__('Bericht getagd met ', ', ', '')); ?>
                                </div>
                            <?php } ?>
                            <br />
                            </div>

                        <ul class="post_meta clearfix">
                            <!--<li class="posted_by"><span><?php _e('Geplaatst door', 'black-bird'); ?></span>&nbsp;&nbsp;<img src="<?php echo get_template_directory_uri(); ?>/images/admin.png" /><?php the_author_posts_link(); ?></li>
                            <li class="post_category"><span><?php _e('Posted in', 'black-bird'); ?></span>&nbsp;&nbsp;<?php the_category(', '); ?></li>
                            <li class="post_date"><img src="<?php echo get_template_directory_uri(); ?>/images/date.png" />&nbsp;&nbsp; <?php echo get_the_time('M, d, Y') ?></li> -->
                            <a class="read_more" href="<?php the_permalink() ?>"><?php _e('Lees Meer', 'black-bird'); ?></a>
                            <li class="post_comment"><img src="<?php echo get_template_directory_uri(); ?>/images/comment.png" />&nbsp;&nbsp;<span><?php comments_popup_link('Geen reacties.', '1 Reactie.', '% Reacties.'); ?></span></li>
                        </ul>
                    </div>
                    <?php } else {} ?>  
                    <!--End Post-->
                <?php
                endwhile;
            else:
                ?>
                <div class="post">
                    <p>
                    <?php _e('Sorry, no posts matched your criteria.', 'black-bird'); ?>
                    </p>
                </div>
                <?php endif; ?>
            <!--End Loop-->   
            <nav id="nav-single" style="margin-top:20px;"> <span class="nav-previous">
    <?php next_posts_link( __( '&larr; Oudere berichten', 'black-bird' ) ); ?>
    </span> <span class="nav-next">
    <?php previous_posts_link( __( 'Nieuwere berichten &rarr;', 'black-bird' ) ); ?>
    </span> </nav>
        </div>