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水稻烤田,可以减少土壤水分。土壤从淹水状态变成干旱状态,土壤中的铵态氮和有效磷有所下降,水稻根系对水分和养分的吸收暂时减少,因而能限制无效分蘖的发生。烤田能使好气性微生物活动加强,促进有机物的分解和矿化;一旦复水后,土壤中空气得以更新,土壤养分提高。烤田可使土壤通透性加强,大气进入耕作层,有利于土壤中还原物质的氧化,消除有毒物质,提高根系活力。烤田能改善株型和透光条件,降低田间空气湿度,减少病虫为害并可防止其蔓延。
Paddy field rice, can reduce soil moisture. The soil changed from flooded state to arid state, the amount of ammonium nitrogen and available phosphorus in soil decreased, and the absorption of water and nutrients in rice roots decreased temporarily, which could limit the occurrence of ineffective tillers. Baked fields can enhance the activity of aerobic microorganisms to promote the decomposition and mineralization of organic matter; once the re-water, the soil air to be updated, increased soil nutrients. Baked fields can enhance soil permeability, the atmosphere into the tillage layer is conducive to the reduction of soil oxidation of substances, the elimination of toxic substances, improve root activity. Baked fields can improve plant type and light transmission conditions, reduce field humidity, reduce pest damage and prevent its spread.