1烤田的作用1.1抑制氮素吸收,起控氮蹲苗作用。烤田使水稻植株对氮素的吸收迅速减少。这是因为烤田使土壤水分减少,水稻根系吸收受到暂时的抑制,对氮素吸收减少。同时烤田后肥料分解减慢,还发生一定程度的土壤脱氮现象使土壤氮素减少,也抑制了水稻对氮素的吸收。所以烤田后,植株含氮率迅速降低。1.2改善土壤环境,促进根系发育。因为水稻有 The role of a baked Tian 1.1 inhibition of nitrogen absorption, control of nitrogen Dunmiao role. Baked field so that rice plant nitrogen absorption decreased rapidly. This is due to the reduction of soil moisture caused by baking fields, the temporary suppression of rice root absorption and the reduction of nitrogen absorption. In the meantime, the decomposition of fertilizers slowed down and the degree of soil denitrification also reduced soil nitrogen and inhibited the nitrogen uptake by rice. So after baking, the plant nitrogen content decreased rapidly. 1.2 to improve the soil environment and promote root development. Because rice is there