【摘要】：為了高效貯蓄利用夏季降水資源,明確不同種植制度及土壤耕作方式的麥田周年土壤水分動(dòng)態(tài)變化規(guī)律,在山西臨汾采用大區(qū)對(duì)比方法研究了麥茬復(fù)播谷子、休閑期土壤耕作方式對(duì)麥田周年土壤水分動(dòng)態(tài)及水分利用效率的影響。結(jié)果表明:在夏季降雨較少年型,在小麥播種期0—200cm土層貯水量為休閑制少耕休閑制傳統(tǒng)耕作休閑制免耕麥茬復(fù)播谷子,麥茬復(fù)播谷子全生育期0—200cm土層的耗水量高于休閑制的3個(gè)不同土壤耕作方式。在小麥生育期降水較多年型,0—200cm貯水量在小麥返青期和拔節(jié)期谷子茬口低于休閑茬口少耕和傳統(tǒng)耕作,灌漿期和成熟期高于休閑茬口少耕和傳統(tǒng)耕作。播種—返青階段,谷子茬口各土層的耗水量均小于休閑茬口少耕和傳統(tǒng)耕作;返青—拔節(jié)階段谷子茬口、休閑茬口少耕和傳統(tǒng)耕作在100—200cm土層水分由積蓄變化為拔節(jié)—灌漿階段、灌漿—成熟階段的虧缺;在播種—成熟全階段0—200cm土層的總耗水量為休閑茬口傳統(tǒng)耕作休閑茬口少耕谷子茬口。周年0—100cm土層土壤水分谷子茬口、休閑茬口少耕和傳統(tǒng)耕作均有不同程度的積蓄,100—200,0—200cm土層谷子茬口水分積蓄,而休閑茬口少耕和傳統(tǒng)耕作水分均為虧缺。水分利用效率為谷子茬口休閑茬口少耕休閑茬口傳統(tǒng)耕作。研究結(jié)果為該區(qū)域正確選擇種植制度及夏季休閑制土壤耕作方式提供了理論和技術(shù)支撐。
[Abstract]:In order to efficiently store and utilize summer precipitation resources and determine the dynamic change of annual soil moisture in wheat fields with different planting systems and soil tillage methods, a comparative study was carried out in Linfen, Shanxi Province, on wheat stubble reseeding millet. Effects of soil Tillage methods on Annual soil moisture Dynamics and Water use efficiency in Wheat Field during Recreation period. The results showed that the rainfall in summer was younger than that in summer, and the water storage in 0-200cm soil layer in the sowing period of wheat was as follows: leisure system, less tillage, leisure, traditional tillage, no tillage, wheat stubble, repeated sowing millet. The water consumption of 0-200cm soil layer in the whole growth period of wheat stubble millet was higher than that of three different soil tillage methods. During the growth period of wheat, the storage water of 0-200cm of precipitation was lower than that of fallow stubble and traditional tillage at the stage of returning to green and at jointing stage, but it was higher at filling stage and ripening stage than that at the stage of fallow stubble and traditional tillage. In the stage of sowing and turning green, the water consumption of every soil layer in the stubble of millet was less than that in the tillage of leisure stubble and traditional tillage, and in the stage of returning green to jointing, The change of soil moisture in 100-200cm from the accumulation of less tillage and traditional tillage to jointing and filling stage, and the deficiency of grain-maturation stage in fallow stubble and traditional tillage; The total water consumption of 0-200cm soil layer in the whole stage of seeding and ripening was the traditional tillage stubble with the traditional tillage and the wheat stubble with less tillage. The annual soil water content of millet stubble in 0-100cm soil layer, less tillage of leisure stubble and traditional tillage were all accumulated in varying degrees, but the soil moisture of millet stubble in 100-200 ~ 200cm soil layer was deficient, while that of leisure stubble and traditional tillage was deficient. Water use efficiency (Wue) is the traditional tillage of millet stubble, low tillage and leisure stubble. The results provide theoretical and technical support for the proper selection of planting system and summer recreational soil tillage in this area.
【作者單位】： 山西省農(nóng)業(yè)科學(xué)院小麥研究所;山西省農(nóng)業(yè)科學(xué)院隰縣農(nóng)業(yè)試驗(yàn)站;
【基金】：山西省農(nóng)業(yè)科學(xué)院重點(diǎn)項(xiàng)目(YZD1509) 山西省科技廳攻關(guān)項(xiàng)目(20150311001-4)
【分類號(hào)】：S152.7

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本文編號(hào)：2230589