作物缺硫的症状作物缺硫时,其外观症状与缺氮相似,叶片呈现淡绿或黄色,缺素最先发生在幼叶叶片上,一般是幼芽先变黄色,心叶失绿黄化,植株黄化均匀,茎细弱,根细长而不分枝,开花结实推迟,果实减少,缺氮的症状是首先从下部老叶开始,而缺硫的症状是从上部新叶先开始,二者容易区别。油菜、棉花缺硫,常表现开花延续不断,花蕾不能发育,种 Sulfur deficiency crops crop sulfur deficiency, the appearance of similar symptoms and nitrogen deficiency, the leaves showed light green or yellow, the first deficiency occurred in young leaves, the leaves are generally yellow first, the leaves lost green yellow , Plant yellow uniform, thin stems, slender roots without branching, delayed fruiting, fruit reduction, the symptoms of nitrogen deficiency is the first to start from the lower part of the old leaves, and the symptoms of sulfur deficiency from the top of the new leaves first, the second Easy to distinguish. Rape, cotton sulfur deficiency, often the performance of continuous flowering, flower buds can not develop, species