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硼元素作为重要微量元素之一,对作物正常生长发育及增产具有不可替代的作用。人们都知道,油菜缺硼“花而不实”,棉花缺硼“蕾而不花”,花生缺硼“果而无仁”,蚕豆缺硼“花而不荚”,小麦缺硼“小花不孕”,板栗缺硼“蓬而无仁”,柑桔缺硼“果小果硬”,苹果缺硼“果小畸形”……但能够识别蔬菜缺硼症状的却很少。现将几种蔬菜缺硼症状及矫正措施介绍如下: 一、马铃薯顶端萎缩直至死亡,或侧枝呈丛生状,节间短,生长矮。叶片粗糙增厚,叶缘上卷,易早落叶。薯块小,表皮溃烂,薯肉局部变色,味差难食,不易贮存。 二、甘蓝幼苗缺硼叶片细长,叶内卷,造成结球叶的顶部发育不良,结球松散,叶片间空隙大,叶球小而轻,有时球内叶片上产生棕斑,斑易腐,食性差,难贮存。 三、花椰菜叶片不展而内卷,叶柄上出现褐色横裂成空洞,裂面显褐色。花环变为锈褐色,色泽差,叶发苦,难食难贮。 四、芹菜幼叶边缘产生褐色斑点,叶尖变黄,生长停止,植株小,茎易裂,茎裂多出现在外叶柄内侧,表皮开裂,开裂组织变褐,质差味次,产量低。
As one of the important trace elements, boron has an irreplaceable effect on normal crop growth and yield increase. People all know that the lack of boron rape “flowers and not real”, cotton, lack of boron, “bud instead of flowers,” lack of boron in peanuts, “fruit and no kernel” Pregnancy “, chestnut boron deficiency” Pu without kernel “, citrus lack of boron” fruit small fruit hard “apple boron deficiency” small fruit deformity "... But to identify the lack of boron vegetables symptoms are very small. Now several vegetable lack of boron symptoms and corrective measures are described below: First, the top of the potato shrinks until death, or collateral fasciculate, internodes short, growing short. Rough thicker leaves, leaf margin on the roll, easy to early leaves. Small tubers, epidermal ulcers, local discoloration of flesh, poor taste difficult to store. Second, lack of boron seedlings of cabbage slender leaves, leaf roll, resulting in the top of the cotyledon poorly developed, loose knot, large gaps between the leaves, leaves small and light, and sometimes brown leaves on the ball spot, spot perishable Food poor, difficult to store. Third, the cauliflower leaves do not show the volume and roll, petiole brown crosswise into a hollow, cracked surface was brown. Garland becomes rust brown, poor color, leaf hair bitter, difficult to eat difficult storage. Four, celery leaves edge brown spots, tip yellow, growth stops, the plant is small, easy to crack stems, stems appear mostly in the outer petiole, epidermis cracking, cracking brown tissue, poor quality taste, low yield.