高硫气田SO_2排放对水稻生长及产量的影响

Influence of SO_2 emission from high sulfur gas fields on growth and yield of rice

对污染区和清洁区分别进行土壤和水稻取样,研究了高硫气田SO2排放对水稻生长状况、产量和品质的影响。结果表明:高硫气田SO2排放导致水稻籽粒和叶片中硫含量升高,显著降低水稻籽粒的千粒重,进而影响水稻产量,污染区水稻产量较清洁区降低16.6%～28.2%;硫被水稻营养器官吸收后,累积在生殖器官内,显著降低稻米品质,与清洁区相比,污染区稻米蛋白质含量减少8.6%～22.3%,淀粉含量减少27.4%～53.6%,脂肪含量减少45.6%～71.7%,而灰分含量则升高52.2%～69.4%。

The influence of SO2 from the high sulfur gas field on the growth, yield and quality of rice were studied through sampling of soil and rice in both polluted and non-polluted areas. The results show that SO2 in the air emitted from the high sulfur gas field, can increase sulfur content in the grain and leaves of rice, and significantly reduce the 1000-grain weight and rice yield. Rice yield decreases by 16.6%～28.2% in polluted areas, compared with the non-polluted areas. Sulfur absorbed by rice vegetative organs and accumulated in the reproductive organs, can significantly debase rice quality by the inhibition of protein, starch and fat formation. Compared with the non-polluted areas, rice protein content in contaminated areas decreases by 8.6%～22.3%, starch content decreases by 27.4%～53.6%, fat content decreases by 45.6%～71.7%, while the ash content is increased by 52.2%～69.4%.