石灰对稻田麦草熟化及稻米安全的影响初探

随着农业生产水平的不断提高,农作物秸秆产量也相应提高,尤其是小麦与水稻轮作地区,小麦秸秆和稻秸秆年产量高达18 t/hm²左右。泗阳县从2006年开始推广秸秆全量还田,连续实施12年,累计秸秆还田量达216 t/hm²。本研究通过增施石灰、石膏、生物菌剂等措施,探讨这些措施对农田土壤的影响,以及如何促进还田秸秆的熟化,同时开展了水稻生产的安全性监测。结果表明,各处理比对照（不增施石灰、石膏、生物菌剂等）增产3.41%~20.80%,且各处理土壤、稻谷的重金属含量均不超标。

Preliminary Study on the Influence of Lime on Rice Straw Maturation and Rice Safety

With the continuous development of agricultural production levels, the yield of crop stalks has also increased, especially in areas where wheat and rice are rotated, where the annual output of wheat stalks and rice stalks is relatively large, reaching about 18 t per hectare. Siyang County began to promote the full return of straw to the field in 2006, and the total amount of straw returned to the field for 12 years has reached 216 t per hectare. In this study, the measures such as adding lime, gypsum, and biological inoculants were studied for the impact on the rice yield and safety and farmland soil. The results showed that the yield of each treatment increased by 3.41%~20.80% compared with the control （no lime, gypsum, biological inoculants, etc.）, and the heavy metal content of the soil and grain in each treatment did not exceed the standard.