【作者】 马尚宇；

【导师】 于振文； 王东；

【作者基本信息】 山东农业大学 ， 作物栽培学与耕作学， 2014， 博士

【摘要】 以高产冬小麦品种济麦22为材料，于2009~2013年连续4个小麦生长季，在山东兖州小孟镇史家王子村（35°24′N,116°24′E）进行大田试验，研究不同畦长和畦宽灌溉对小麦耗水特性和产量的影响，为小麦节水高产栽培提供理论依据。2009~2010年生长季试验设置1.0m、1.5m和2.0m3个畦宽处理，分别用W10、W15和W20表示；每个畦宽设置10m、20m、40m和60m4个畦长处理，分别用L10、L20、L40和L60表示。各处理均在小麦拔节期和开花期灌水。2010~2011年生长季试验设置1.0m、1.5m、2.0m和2.5m4个畦宽处理，分别用W10、W15、W20和W25表示；每个畦宽设置10m、20m、40m、60m、80m和100m6个畦长处理，分别用L10、L20、L40、L60、L80和L100表示。各处理均在拔节期灌水，由于本生长季开花期降水，土壤含水量达到小麦开花期预定土壤目标含水量标准，故开花期未灌水。2011~2012和2012~2013年生长季试验设置1.5m、2.0m和2.5m3个畦宽处理，分别用W15、W20和W25表示；每个畦宽设置40m、60m、80m和100m4个畦长处理，分别用L40、L60、L80和L100表示。各处理均在拔节期灌水，开花期土壤含水量达到预定土壤目标含水量标准，故开花期未灌水。1不同畦长灌溉对小麦耗水特性和产量的影响1.1不同畦长灌溉对小麦耗水特性的影响W10条件下，L80总耗水量、灌水量及其占总耗水量的比例和拔节至开花期耗水量与拔节期、开花期和灌浆期棵间蒸发量显著低于L100处理；开花期平均土壤相对含水量显著高于L40、L20和L10处理。W15条件下，L80总耗水量、拔节期、开花期和灌浆期棵间蒸发量显著低于L100处理；拔节期和开花期耗水量和耗水模系数显著低于其他处理；开花期平均土壤相对含水量与L100无显著差异，显著高于其他处理。W20条件下，L80总耗水量、拔节至开花期耗水模系数显著低于其他处理；拔节期、开花期和灌浆期棵间蒸发量为L80和L60显著低于其他处理；开花期平均土壤相对含水量与L60和L100无显著差异，显著高于其他处理。W25条件下，L80总耗水量显著低于L100处理，拔节至开花期耗水模系数显著低于其他处理；灌浆期棵间蒸发量显著低于L100处理；开花期平均土壤相对含水量与L60无显著差异，显著高于其他处理。表明，L80处理开花期土壤相对含水量较高，拔节至开花期耗水模系数和拔节期、开花期和灌浆期棵间蒸发量较低，总耗水量较低，有利于节水。1.2不同畦长灌溉对小麦碳代谢的影响W10和W15条件下，L80灌浆中后期旗叶净光合速率、磷酸蔗糖合成酶活性、超氧化物歧化酶活性和可溶性蛋白含量与L100无显著差异，显著高于其他处理；成熟期干物质积累量与开花后干物质输入籽粒量及其对籽粒产量的贡献率显著高于L40、L20和L10处理。W20和W25条件下，L80灌浆中后期旗叶净光合速率、磷酸蔗糖合成酶活性、超氧化物歧化酶活性和可溶性蛋白含量显著高于其他处理；成熟期干物质积累量与开花后干物质输入籽粒量及其对籽粒产量的贡献率与L60无显著差异，显著高于其他处理。表明，L80处理有利于小麦旗叶在灌浆中后期保持较高的光合能力，促进开花后干物质的积累及其向籽粒中分配。1.3不同畦长灌溉对小麦氮代谢的影响W10和W15条件下，L80成熟期氮素积累量与L100无显著差异，显著高于其他处理；开花前营养器官贮藏氮素转运量及其对籽粒氮素的贡献率显著高于L40、L20和L10处理。W20条件下，L80成熟期氮素积累量与L60无显著差异，显著高于其他处理；开花后氮素吸收量及其对籽粒氮素的贡献率显著高于其他处理。W25条件下，L80成熟期氮素积累量显著高于其他处理；开花后氮素吸收量及其对籽粒氮素的贡献率与L60无显著差异，显著高于L20、L40和L100处理。表明，L80处理有利于小麦对氮素的吸收积累和向籽粒中的转运。1.4不同畦长灌溉对小麦籽粒产量和水分利用效率的影响W10和W15条件下，L80籽粒产量与L60无显著差异，显著高于L10、L20和L40，水分利用效率显著高于L100处理。W20条件下，L80籽粒产量和水分利用效率显著高于其他处理。W25条件下，L80籽粒产量显著高于其他处理，水分利用效率显著高于L10、L20和L100处理。表明，畦宽2.0m条件下，L80获得最高的籽粒产量和水分利用效率，是本试验条件下节水高产的最优处理。2不同畦宽灌溉对小麦耗水特性和产量的影响2.1不同畦宽灌溉对小麦耗水特性的影响各畦长处理条件下，W20处理拔节至开花期耗水量和耗水模系数最低，开花至成熟期耗水量和耗水模系数最高，对60~140cm深层土壤贮水的消耗量较高。W20总耗水量、灌水量及其占总耗水量的比例显著低于其他处理。开花期土壤相对含水量为L10条件下，W20显著高于W10处理； L20、L40、L60和L80条件下，W20显著高于其他处理；L100条件下，W20与W10、W15无显著差异，显著高于W25处理。表明，W20拔节至开花期耗水少，开花期土壤相对含水量较高，总耗水量少，有利于节水。2.2不同畦宽灌溉对小麦碳代谢的影响各畦长条件下，W20处理灌浆中后期旗叶净光合速率、磷酸蔗糖合成酶活性、超氧化物歧化酶活性和可溶性蛋白含量最高，成熟期干物质积累量和开花后干物质输入籽粒量及其对籽粒产量的贡献率显著高于其他处理。表明，W20处理有利于延缓旗叶衰老，有利于开花后干物质积累及干物质向籽粒中转移，为高产奠定物质基础。2.3不同畦宽灌溉对小麦氮代谢的影响各畦长条件下，成熟期氮素积累量W20处理最高。L10、L20和L40条件下，开花期营养器官贮藏氮素转运量及其对籽粒氮素的贡献率W20显著高于其他处理，L60、L80和L100条件下开花后氮素吸收量及其对籽粒氮素的贡献率显著高于其他处理。W20处理促进了小麦拔节后对0~120cm土层土壤硝态氮的吸收。表明，W20有利于小麦对土壤氮素的吸收利用，植株氮素积累量及其向籽粒中的转移较高。2.4不同畦宽灌溉对小麦籽粒产量和水分利用效率的影响各畦长条件下，W20畦内各区间籽粒产量分布较均匀，平均籽粒产量和水分利用效率显著高于其他处理。表明W20处理有利于提高籽粒产量和水分利用效率，是本试验条件下兼顾高产与节水的最优畦宽处理。更多还原

【Abstract】 A field experiment was conducted in Shiwang village (35°24′N,116°24′E), Yanzhou,Shandong during the2009to2013growing seasons using the high-yielding winter wheatcultivar Jimai22as test material. The objective of this experiment was to study the effects ofdifferent field border length and width for irrigation on water consumption characteristics andgrain yield of wheat, and to provide theoretical basis for water-saving and high-yieldingcultivation of wheat.During the2009to2010wheat growing season, three field border widths wereestablished. These field border widths were1.0(W10),1.5(W15) and2.0m (W20). Undereach field border width, four field border lengths were installed, namely,10(L10),20(L20),40(L40) and60m (L60). All treatments were irrigated at jointing and anthesis stages.During the2010to2011wheat growing season, four field border widths wereestablished. These field border widths were1.0(W10),1.5(W15),2.0(W20) and2.5m(W25). Under each field border width, six field border lengths were installed, namely,10(L10),20(L20),40(L40),60(L60),80(L80) and100m (L100). All treatments wereirrigated at jointing stage. The soil water content reached the expected amount because ofprecipitation at anthesis stage, so no irrigation was performed at this stage.During the2011to2012and2012to2013wheat growing seasons, three field borderwidths were established. These three field border widths were1.5(W15),2.0(W20) and2.5m (W25). Under each field border width, four field border lengths were installed, namely,40(L40),60(L60),80(L80) and100m (L100). All treatments were irrigated at jointing stage.No irrigation was performed at anthesis stage because of the soil water content at this stage.1Effect of field border length for irrigation on water consumption characteristics andyield of wheat1.1Effect of field border length for irrigation on water consumption characteristics ofwheatUnder the condition of W10treatment, the total water consumption, irrigation amount,ratio of irrigation amount to total water consumption, water consumption from jointing toanthesis and evaporation amount at jointing, anthesis and grain-filling stages of L80treatmentwere significantly lower than those of L100. The average relative soil water contents of L80were significantly higher than those of L40, L20and L10. Under the condition of W15 treatment, the total water consumption and evaporation amount at jointing, anthesis andgrain-filling stages of L80treatment were significantly lower than those of L100. The waterconsumption from jointing to anthesis and its percentage of L80were significantly lower thanthose of other treatments. The average relative soil water content of L80was not differentfrom that of L100, but significantly higher than those of other treatments. Under the conditionof W20treatment, L80treatment resulted in the lowest total water consumption andpercentage of water consumption from jointing to anthesis. The evaporation amount atjointing, anthesis and grain-filling stages of L80was not different from that of L60, butsignificantly lower than those of other treatments. The average relative soil water content ofL80was not different from those of L60and L100, but significantly higher than those of othertreatments. Under the condition of W25treatment, the total water consumption of L80treatment was significantly lower than that of L100. The percentage of water consumptionfrom jointing to anthesis of L80was significantly lower than those of other treatments. Theevaporation amount at grain-filling stage of L80was significantly lower than that of L100.The average relative soil water content of L80was not different from that of L60, butsignificantly higher than those of other treatments. These results indicate that the averagerelative soil water content of L80was higher, whereas the percentage of water consumptionfrom jointing to anthesis, evaporation amount at jointing, anthesis and grain-filling stages andtotal water consumption were lower. These trends were beneficial for water saving.1.2Effects of field border length for irrigation on carbon metabolism of wheatUnder the conditions of W10and W15treatments, during the mid-and late grain-fillingstages, the net photosynthetic rate, SPS activity, SOD activity and soluble protein content ofthe flag leaf of L80were not different from those of L100, but significantly higher than thoseof other treatments. Dry matter accumulation, dry matter distribution to grain and contributionto grain after anthesis of L80treatment were significantly higher than those of L40, L20andL10.Under the conditions of W20and W25treatments, during the mid-and late grain-fillingstages, the net photosynthetic rate, SPS activity, SOD activity and soluble protein content ofthe flag leaf of L80showed the highest values. Dry matter accumulation, dry matterdistribution to grain and contribution to grain after anthesis of L80treatment were notdifferent from those of L60, but significantly higher than those of other treatments. Theseresults indicate that L80had favourable effects on photosynthetic ability during the mid-andlate grain-filling stages, and was beneficial for improving accumulation and translocationafter anthesis. 1.3Effects of field border length for irrigation on nitrogen metabolism of wheatUnder the conditions of W10and W15treatments, the amount of nitrogen accumulatedat maturity stage of L80was not different from that of L100, but significantly higher thanthose of other treatments. The amount of nitrogen translocated and its contribution to grainnitrogen of L80were higher than those of L40, L20and L10. Under the condition of W20treatment, the amount of nitrogen accumulated at maturity stage of L80was not different fromthat of L60, but significantly higher than those of other treatments. The amount of nitrogenabsorbed after anthesis and its contribution to grain nitrogen of L80showed the highest values.Under W25condition, the amount of nitrogen accumulated at maturity stage of L80showedthe highest value. The amount of nitrogen absorbed after anthesis and its contribution to grainnitrogen of L80were not different from those of L60, but significantly higher than those ofL20, L40and L100. These results indicate that L80had favourable effects on increasingnitrogen accumulation, and was beneficial for improving the translocation of nitrogen.1.4Effects of field border length for irrigation on grain yield and water use efficiency ofwheatUnder the conditions of W10and W15treatments, the grain yield of L80was notdifferent from that of L60, but significantly higher than those of L10, L20and L40. The wateruse efficiency of L80was significantly higher than that of L100. Under the condition of W20treatment, the grain yield and water use efficiency of L80showed the highest values. Underthe condition of W20treatment, the grain yield of L80showed the highest value. The wateruse efficiency of L80was significantly higher than those of L10, L20and L100. These resultsindicate that L80obtained the highest grain yield and water use efficiency under the conditionof W20treatment. Thus, L80was the optimal field border length for irrigation in our study.2Effect of field border width for irrigation on water consumption characteristics andyield of wheat2.1Effect of field border width for irrigation on water consumption characteristics ofwheatUnder the same border length condition, W20treatment showed the lowest percentage ofwater consumption from jointing to anthesis but the highest water consumption from anthesisto maturity and its percentage. Soil water consumption in the60cm to140cm soil layer ofW20treatment was higher than those of other treatments. The total water consumption,irrigation amount and ratio of irrigation amount to total water consumption of W20treatmentwere significantly lower than those of other treatments. Under L10condition, the averagerelative soil water content at anthesis of W20treatment was significantly higher than that of W10. W20treatment showed the highest values under the conditions of L20, L40, L60andL80. Under the condition of L100, W20treatment showed no difference with W10and W15,but was significantly higher than W25. These results indicate that W20treatment resulted inlow water consumption from jointing to anthesis and high average relative soil water contentat anthesis. Moreover, the total water consumption of W20was low. These trends werebeneficial for water saving.2.2Effects of field border width for irrigation on carbon metabolism of wheatUnder the same border length condition, during the mid-and late grain-filling stages, thenet photosynthetic rate, SPS activity, SOD activity and soluble protein content of the flag leafof W20showed the highest values. Dry matter accumulation at maturity and dry matteraccumulation and its contribution to grain after anthesis of W20treatment were significantlyhigher than those of other treatments. These results indicate that W20treatment hadfavourable effects on photosynthetic ability during the mid-and late grain-filling stages, andimproved accumulation and translocation after anthesis.2.3Effects of field border width for irrigation on nitrogen metabolism of wheatUnder the same border length condition, the amount of nitrogen accumulated at maturitystage of W20showed the highest value. Under the conditions of L10, L20and L40, theamount of nitrogen translocated and its contribution to grain nitrogen of W20were higherthan those of other treatments. Under the conditions of L60, L80and L100, the amount ofnitrogen accumulated after anthesis and its contribution to grain nitrogen of W20showed thehighest values. W20treatment absorbed more NO3––N content at the0cm to120cm soillayer. These results indicate that W20had favourable effects on the utilisation of soil nitrogen,and improved the accumulation and translocation of nitrogen.2.4Effects of field border width for irrigation on grain yield and water use efficiency ofwheatUnder the same border length condition, the grain yield of W20treatment was moreuniformly distributed in different regions of the same border than that of other treatments. Theaverage grain yield and water use efficiency of W20treatment were significantly higher thanthose of other treatments. These results indicate that W20treatment resulted in the highestgrain yield and water use efficiency, and could be the optimal field border width for watersaving and high yield in this study.更多还原