硫肥对油菜产量及品质的影响

Effects of Sulfur Fertilizer on Yield and Quality of Rapeseed

1997～ 1999年通过田间试验 ,研究了 S95,硫磺粉、普钙以及施用 15 ,30 ,6 0 kg/ hm2 的硫肥 (S,以 S95为硫源 )对油菜产量和品质的影响 .结果表明 :施用硫肥能显著增加油菜籽粒的产量 ,增产幅度为 17.3%～ 42 .8% ,S95的肥效优于硫磺粉和普钙 .施硫肥 (S) 15 ,30 ,6 0 kg/ hm2对油菜籽粒都有显著的增产作用 ,秸秆和根系的干重比对照高 19.9%～ 6 6 .8% ,但尚未达显著差异 .施用硫肥显著提高油菜籽粒的含硫量 ,降低油菜籽粒的氮硫比 ,其升降幅度与硫肥用量相关 .施用硫肥对油菜籽粒的粗脂肪和粗蛋白质含量无显著影响 .

The effects of sulfur 95(S 95), elemental sulfur and superphosphate treatment and three levels of application rate of sulfur 95 (S,15,30,60 kg/hm2) on rape were studied in field experiments from 1997 to 1999. The results show that seed yield increase significantly with the application of sulfur fertilizer. The increase rate is 17.3%～42.8%(20.0%～42.8% for S 95,17.3%～37.9% for elemental sulfur and 20.4%～33.7% for superphosphate). The response in yield to S 95 is better than those of both elemental sulfur and superphosphate treatment.When the yield of rapeseed is high, the response to S 95 is better than those of both elemental sulfur and superphosphate treatment. Rapeseed yield increase significantly in three levels of application rate of S 95(S,15,30,60 kg/hm2); the straw and the root system increases 19.9%～66.8%,but it is insignificant.The total S contents in seed increases significantly and the N/S ratio in seed decreases with the application of sulfur fertilizers. The change ranges of them are related to the applying rate of sulfur fertilizers. No effect on total fat and total protein in rapeseed is shown with the application of sulfur fertilizer.