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通过在长江下游沿江平原不同地下水位田块上种植油菜,对不同硫源硫肥的生物效应进行了研究。结果表明,在地下水位为1.5 m时,施用硫肥产生的效果较地下水位为0.8 m的各处理明显,表现为可以改善油菜的农艺性状,提高产量,促进油菜对硫的吸收,提高油菜籽含硫量、含氮量和粗脂肪含量。同时,在一定程度上缓解了油菜感染菌核病的程度。在不同地下水位条件下,ES1处理效果好于ES2处理,而SSP2处理效果好于SSP1处理。本试验条件下,每公顷施用60 kg的硫就可满足作物的需要,获得较好的产量、品质。
The biological effects of sulfur fertilizers on different sulfur sources were studied by planting rape on different groundwater fields along the Yangtze River Plain in the lower reaches of the Yangtze River. The results showed that when the groundwater level was 1.5 m, the effect of applying sulfur fertilizer was more obvious than that of the groundwater level of 0.8 m, which showed that it could improve the agronomic characters of rapeseed, increase the yield, promote the absorption of sulfur in rape and improve the rapeseed Sulfur content, nitrogen content and crude fat content. At the same time, to a certain extent, ease the extent of sclerotinia sclerotinia infection. Under different water table conditions, ES1 treatment is better than ES2 treatment, while SSP2 treatment is better than SSP1 treatment. Under the test conditions, the application of 60 kg of sulfur per hectare can meet the needs of crops and obtain better yield and quality.