限量灌溉对冬小麦植株性状和产量的影响

【目的】以先进灌区的灌溉水平来衡量,挖掘新疆农业节水的潜力。【方法】设不同灌水处理其对冬小麦群体变化、单株生物重、株高、穗部性状、叶面积、产量等指标进行研究。【结果】水分胁迫会影响小麦的生物量、叶面积和分蘖等群体发育指标,并通过光合营养等作物生理过程的影响而限制小麦高产。【结论】对试验区冬小麦春后灌水时期而言,拔节期和孕穗期是个重要时期,孕穗期前灌水与孕穗期和孕穗期后灌水有一定的差异,春后前期灌水对产量的贡献明显高于后期灌水。

Effect of Limited Irrigation on Plant Properties and Yield of Winter Wheat

Objective]There are great water-saving potentialities in Xinjiang agriculture,compared with the irrigation level of advanced irrigation area.Method]It is of great importance of designing different irrgiation treatments to study the index of group change,biological weight per lant,the properties of ear,leaf area,yield of winter wheat.Result]The result indicated that the group index of water stress had effect on biomass,leaf area and tillering of wheat.The high yield of wheat was limited by the effect of photosynthetical nutrient and physiological process of crops.In the test area,jointing stage and boot stage were the great important period for irrigation of winter wheat.There were a certain difference of irrigation during boot stage,before boot stage and after boot stage.Conclusion]The contribution rate of the early irrigation after spring was much greater than that of the late irrigation.