新疆农业科学2018，Vol.55Issue(4)：618-626,9.DOI:10.6048/j.issn.1001-4330.2018.04.004
水肥运筹对滴灌冬小麦干物质积累和产量调控效应研究
Effect of Irrigation and Fertilization on Dry Matter Accumulation and Yield Control of Drip Irrigation Winter Wheat
摘要
Abstract
[Objective] To discuss the optimal combination of water and fertilizer and provide the theoret-ical basis for high-yield cultivation of winter wheat and the measures of saving water and fertilizer by desig-ning two factors and four levels of split area and regulating and controlling the amount of fertilizer and irriga-tion.[Method]The experiment was conducted with Xindong No. 36 as the test material. Under the condition of field drip irrigation, four fertilizer rates of 0 kg / hm2(N0), 375 kg / hm2(N1) , 450 kg / hm2(N2) and 525 kg / hm2(N3) were set; Four irrigation gradients were: 3,450 m3/ hm2(W1), 4,200 m3/ hm2(W2) , 4,950 m3/ hm2(W3), 5,700 m3/ hm2(W4). Through the study of dry matter, leaf area index and yield traits, the effects of water and fertilizer on the growth of wheat were revealed.[Result]Under the same amount of fertilizer, increasing irrigation volume significantly increased dry matter accumulation, leaf area index and yield. The accumulation of dry matter increased rapidly and slowly from jointing stage to filling stage. Logistic equation fitting showed that dry matter accumulated rapidly from 5-7 d after jointing stage, after 35-45 d, it turned to slow accumulation. The rapid accumulation time of N2W2 was the earliest and the maximum accu-mulation rate was higher. Leaf area index ( LAI) reached the maximum at booting stage and gradually de-creased at later stage. N2W3 treatment increased rapidly from jointing to booting stage, and increased first and then decreased with the increase of irrigation amount. The final yield was N2 ＞ N3 ＞ N1 ＞ N0, and the highest yield was 9,848. 13 kg/hm2 for N2W3 treatment. There was no significant difference with N2W2 treat-ment. The effect of water and fertilizer interaction on panicle number and yield was very significant (P ＜ 0. 01) , and had significant effect on grain number per ear ( P ＜ 0. 05) , but had no significant correlation with 1,000-grain weight.[Conclusion]In conclusion, the fertilization amount is 450 kg/hm2 and irrigation vol-ume is 4,200 m3/ hm2, that is, N2W2 treatment is the optimal combination of high yield and water and fertil-izer saving.关键词
冬小麦/滴灌/干物质/产量Key words
winter wheat/drip irrigation/dry matter/yield分类
农业科技引用本文复制引用
崔月,张宏芝,赵奇,刘建鹤..水肥运筹对滴灌冬小麦干物质积累和产量调控效应研究[J].新疆农业科学,2018,55(4):618-626,9.基金项目
国家重点研发项目"粮食主产区产量与效率层次差异消减技术途径综合评价"(2016YFD0300110)Selection of High-yield and Fine-quality Peanuts Varieties and Study on the Cultivation(2016B01008-2) （2016YFD0300110）
