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2014—2015和2015—2016年小麦生长季,设置微喷带长宽组合处理:带宽65 mm下设置带长60 m(T_1)、80 m(T_2)和100 m(T_3)处理,带宽80 mm下设置带长60 m(T_4)、80 m(T_5)和100 m(T_6)处理,研究不同组合对麦畦各区段(沿微喷带铺设方向分为D_1至D_6)水分和旗叶叶绿素荧光特性的影响.结果表明:拔节期灌溉,带宽65 mm下喷洒均匀系数为T_1>T_2、T_3,带宽80 mm下为T_4、T_5>T_6;开花期灌溉,带宽65 mm下为T_1>T_2>T_3,带宽80 mm下为T_4>T_5>T_6.65 mm带宽下,T_1开花期灌溉后各区段0~40 cm土层平均土壤相对含水量,以及花后20和30 d旗叶实际光化学效率(Φ_(PSⅡ))、非光化学猝灭系数(NPQ)、电子传递效率(ET_R)和籽粒产量均无显著差异;T_2为D_1、D_2>D_3>D_4>D_5;T_3为D_1、D_2>D_3>D_4>D_5、D_6.各区段花后20和30 d旗叶Φ_(PSⅡ)、NPQ、ET_R以及成熟期各区段干物质积累量为T_1>T_2、T_3.80 mm带宽下,T_4开花期灌溉后各区段0~40 cm土层平均土壤相对含水量,以及花后20和30 d旗叶ΦPSII、NPQ、ET_R和籽粒产量无显著差异,T_5为D_1、D_2、D_3>D_4、D_5;T_6为D_1、D_2、D_3>D_4>D_5>D_6.各区段花后20和30 d旗叶Φ_(PSⅡ)、NPQ、ET_R以及成熟期各区段干物质积累量为T_4、T_5>T_6.籽粒产量和水分利用效率为T_1、T_4、T_5>T_2、T_3、T_6,灌溉效益T_1、T_4优于T_5处理.本试验条件下,带宽65 mm下T_1和带宽80 mm下T_4为节水高产的最优处理,T_5为较优处理.
In the growing season of wheat from 2014 to 2015 and from 2015 to 2016, the combination of length and breadth of micro-jetting tapes was set. The strip width was 65 mm and the strip length was 60 m (T_1), 80 m (T_2) and 100 m (T_4), 80 m (T_5) and 100 m (T_6) were set up to study the effects of different combinations on the water content and flag leaf chlorophyll fluorescence The results showed that the irrigation uniformity coefficients of T_1> T_2 and T_3 at 65 mm and T_5> T_6 under 80 mm of irrigation were all at the jointing stage, and T_1> T_2> T_3 at the flowering stage , The relative soil moisture content of 0-40 cm soil layer at T_1 flowering stage and the actual photochemical efficiency of flag leaf at 20 and 30 days after flowering (T_4> T_5> T_6.65 mm) (PSⅡ), non-photochemical quenching coefficient (NPQ), electron transfer efficiency (ET_R) and grain yield were all significantly different. T_2 was D_1, D_2> D_3> D_4> D_5, T_3 was D_1, D_2> D_3> D_5 and D_6, and the dry matter accumulation rates of flag leaf Φ_ (PSⅡ), NPQ and ET_R at the 20 and 30 d after anthesis were T_1> T_2 and T_3.80 mm, respectively, 0 ~ 40 cm soil average soil Relative water content, and ΦPSII, NPQ, ET_R and grain yield of flag leaves at 20 and 30 days after flowering were not significantly different, T_5 was D_1, D_2, D_3> D_4 and D_5, T_6 was D_1, D_2, D_3> D_4> D_5> D_6 The leaf PS Ⅱ, NPQ, ET_R and the accumulation of dry matter in each stage of maturity were T_4 and T_5> T_6 at 20 and 30 days after anthesis.The grain yield and water use efficiency were T_1, T_4 and T_5> T_2, T_3, T_6 and irrigation benefit T_1, T_4 were better than T_5.Under the experimental conditions, T_4 with a bandwidth of 65 mm and T_4 with a bandwidth of 80 mm were the optimal treatments for water-saving and high-yield, and T_5 was the better treatment.