Effects Of Different Drip Irrigation Belt Allocation Models On Water Utilization And Yield Of Spring Wheat In Xinjiang

In order to explore the effect of different drip irrigation belt configuration models on the dry matter,water and nitrogen absorption and yield of drip irrigation spring wheat,this experiment selected two wheat varieties Xinchun 22(water sensitive)and Xinchun 44(water insensitive),Set up 3 planting modes(TR:conventional planting;K: wide and narrow row planting;S: narrow band planting)and 3 drip irrigation belt configurations("1 tube and 4 rows" : 2 rows on each side of a drip irrigation belt,respectively recorded as R1,R2 rows;"1 tube 6 rows" : 3 rows on each side of a drip irrigation belt,which are R1,R2,R3 rows respectively;"1 tube 8 rows" : a drip irrigation belt has 4 rows on each side,marked as R1 R2,R3,R4 rows),studied the effects of different drip irrigation belt configuration modes on the dry matter accumulation,water and nitrogen absorption,yield,quality and benefit of Xinjiang drip irrigation spring wheat.The results are as follows:1.The effect of different drip irrigation belt configuration modes on drip irrigation wheat yield and its three factorsIn different drip irrigation belt configuration modes,the two varieties showed that the thousand-grain weight,grain number per panicle,and panicle number gradually decreased from near-line to far-line under TR4 mode.Under K and S planting modes,thousand-grain weight,grain number per panicle,and panicle number decreased gradually.The near-travel to the far-travel first decreased and then increased;in 2018,the TR4 mode had the highest output,followed by the S6,K6,S8 and K8 drip irrigation tape configuration modes from large to small.In the K6,S6 drip irrigation tape configuration mode,the output of row R3 is higher than the output of row R2;in the K8,S8 drip irrigation tape configuration mode,the output of row R4 is higher than the output of row R3;the TR4 drip irrigation tape configuration mode has the highest output in 2019,And the rest are as follows: Xinchun No.22 S6> S8> K6> K8;Xinchun No.44 S6> S8>K6> K8.In K6 and S6,the output of row R3 is higher than that of row R2;in K8 and S8,the output of row R4 is higher than that of row R3.2.The influence of different drip irrigation belt configuration modes on soil volumetric water content and irrigation water use efficiencyIn different drip irrigation belt configuration modes,the K and S modes shorten the row spacing of wheat and indirectly shorten the distance of horizontal water movement,which is beneficial to the side row wheat to obtain sufficient water and is beneficial to the supplement after water consumption.Therefore,K,S mode can make the side line get more water.Compared with TR4,both varieties have the highest irrigation efficiency under S6.3.The influence of different drip irrigation belt configuration modes on the dry matter accumulation of drip irrigation wheatThe dry matter accumulation of wheat Xinchun 44 was higher than that of Xinchun 22,and the dry matter accumulation increased with the advancement of the growth period,and reached the maximum in the mature period.The accumulation of dry matter per plant among different drip irrigation belt configuration modes is TR4>K6>S6>K8>S8.In the dry matter accumulation between the two varieties indifferent rows TR4(conventional 1 tube and 4 rows),R1>R2;K6(wide and narrow rows,1 tube and 6rows),S6(reduced bandwidth,1 tube and 6 rows),R1>R3>R2;R1>R2>R4>R3 in K8(wide and narrow rows with 1 tube and 8 rows),S8(reduced bandwidth with 1 tube and 8 rows).The distribution ratio of dry matter in the plant during the flowering period is in the order of stem>ear>leaf.In TR4,the transfer rate of dry matter before anthesis is R1>R2,the transfer efficiency of dry matter before anthesis,the contribution rate of dry matter before anthesis to the grain is R1 <R2,and the accumulation amount after anthesis and the contribution rate of dry matter after anthesis to the grain are both R1 > R2.In K6 and S6,the pre-flowering dry matter transfer amount R1> R3> R2,the pre-flowering dry matter transfer efficiency,the contribution rate of pre-flowering dry matter to the grain is R1 <R3 <R2;The contribution rate of grains is R1> R3> R2.In K8 and S8,the pre-flowering dry matter transfer amount R1> R2> R4> R3,the pre-flowering dry matter transfer efficiency and the contribution rate of pre-flowering dry matter to the grain are R1 <R2 <R4 <R3;the post-flowering accumulation,flower The contribution rate of post dry matter to the grains is R1> R2> R4> R3.4.The effect of different drip irrigation belt configuration modes on the nitrogen accumulation of drip irrigation wheat plantsThe nitrogen accumulation of drip irrigation wheat plants gradually increased during the growth period and reached the maximum during the mature period.The nitrogen accumulation per plant of Xinchun 44 was higher than that of Xinchun 22.Nitrogen accumulation per plant of Xinchun 22 at the mature stage TR4>S6>K6>K8>S8;Nitrogen accumulation per plant of Xinchun 44 at the mature stage TR4>K6>S6>K8>S8.1 tube and 4 rows configuration R1> R2,and the difference is significant.Under K6,R1> R2> R3,R2 and R3 are not significant;under S6,R1> R2> R3,and R2 and R3 are significant.Under the configuration of 1 tube and 8 rows,R1> R2> R3> R4,the difference between R3 and R4 is not significant.Stems,leaves and ears gradually decrease from near row to far row,and the nitrogen accumulation and distribution ratio in grains is opposite to that of stems,leaves and ears.5.The effect of different drip irrigation belt configuration modes on drip irrigation wheat qualityThe protein content,wet gluten content and sedimentation value of Xinchun 22 wheat reached the maximum in K8 mode,which were 15.46%,33.94%,and 34.77 ml,respectively.The highest grain bulk density in S8 mode was 795.00 g/L,followed by K8 mode.The protein content,wet gluten content,and grain bulk weight of Xinchun 44 wheat reached the maximum in K8 mode,which were 15.64%,34.48%and 800.35 g/L,respectively.The sedimentation value of TR4 mode was 33.11 ml.6.The impact of different drip irrigation belt configuration modes on the economic benefits of drip irrigation wheatIn 2018,TR4 had the highest economic benefits,and the economic benefits of other drip irrigation belt configuration models were S6,K6,S8,and K8 in descending order;in 2019,Xinchun No.22 variety S6 was the highest,and the remaining treatments were K6> S8> TR4> K8.Xinchun No.44 variety S6 drip irrigation tape has the highest configuration mode,and the other order is K6> S8> K8> TR4.Compared with the TR4 drip irrigation tape configuration mode,the drip irrigation cost of S6,K6,S8,K8 four drip irrigation tape configuration modes saves 500-1000 yuan.From the comprehensive analysis of wheat dry matter accumulation and transportation,plant nitrogenaccumulation,soil moisture content changes,wheat quality,yield and its constituent factors,economic benefits,etc.,the S6 drip irrigation belt configuration model not only ensures the yield,quality and economic benefits,but also reduces Therefore,the S6 drip irrigation tape configuration mode is the optimal drip irrigation tape configuration mode in this experiment.