在油菜的茎叶中含有较多的硫,生产100斤油菜籽(干重),需要纯硫2.6—3.1斤。据我们试验,在缺硫的土壤中施用硫肥,可增产菜籽2—3成左右。油菜如果缺硫,表现植株矮小,茎秆木质化,易折,幼叶窄小,叶绿素减少,产量不高。施用硫肥应注意以下几点: 一、首先应确定种油菜的土壤是否缺硫。一般砂土田、板砂田、低肥田,或前作每亩未施足40斤以上过磷酸钙或硫酸铵的土壤,都可能缺硫。有机质含量高的肥土田或靠近硫铁矿产地的田块,一般均不缺硫。要做到准确判断,最好对土壤进行测定。 In rape stems and leaves contain more sulfur, producing 100 kg of rapeseed (dry weight), requires pure sulfur 2.6-3.1 kg. According to our experiment, the application of sulfur fertilizer in sulfur-deficient soil can increase about 2-3% of rapeseed. If the rape lack of sulfur, the performance of short plants, stems lignification, easy to fold, young leaves narrow, chlorophyll reduced yield is not high. Sulfur fertilizer should pay attention to the following points: First, you should first determine the rapeseed soil sulfur deficiency. Ordinary sand fields, plankton fields, low fertile fields, or before the soil per acre did not apply enough to over 40 kg of superphosphate or ammonium sulfate, may lack sulfur. Fertile soil with high organic matter or plots near the source of pyrite does not generally lack sulfur. To make accurate judgments, the best determination of the soil.