硫素对冬小麦品质和产量的影响

在高氮低硫地块施用硫肥提高了冬小麦的群体光合速率 ,鲁麦 2 2群体光合速率随施硫量的增加而提高 ,烟农 15的S3 处理和S2 处理之间差异不显著。施硫肥显著提高两品种旗叶硝酸还原酶活性 ,两品种植株体在各个时期的氮素含量及积累量均增加。施硫肥后 ,两品种籽粒容重、出粉率、蛋白质含量、湿面筋含量和面团稳定时间均显著提高 ,其中S2 处理显著高于S1处理和S0 处理。施硫肥增加两品种的产量 ,鲁麦 2 2穗数、穗粒数和千粒重随施硫量的增加显著增加 ,S3 处理的产量最高 ;硫肥对烟农 15的穗数和穗粒数有提高作用 ,但对千粒重影响较小

Effect of sulfur on quality and yield of winter wheat

The canopy photosynthetic rate of winter wheat cultivars rose when the sulfur were applied on rich nitrogen but poor sulfur field It rose as sulfur increased for Lumai 22, but for Yannong 15, there was no difference between treatment S 3 and treatment S 2 When the sulfur was applied, the NR activity in flag leaf rose obviously, the content and the accumulating amount of nitrogen in two cultivars increased at each stage, and the kernel volume weight, the flour extraction, the protein content, the wet gluten content and the dough stability time for both cultivars were also lifted, with treatment S 2 highest among all treatments In addition, applying sulfur could increase yield of both cultivars For Lumai 22, applying sulfur could obviously increase the spikes, the kernels per spike and the 1000-kernel weight, with the yield of treatment S 3 highest For Yannong 15, applying sulfur could also increase the spikes and the kernels per spike, but had no significant effect on the 1000-kernel weight