Matter Accumulation and Transport of Winter Wheat and Utilization of Photothermal Resources under Different Cultivation Patterns

JIANG Lina; LI Jinna; QI Hongzhi; YUE Ying; ZHANG Yawen; ZHU Yalin; LI Chunxi

doi:10.15933/j.cnki.1004-3268.2018.12.003

Abstract：In order to explore the high yield and efficient cultivation pattern of winter wheat in Huanghuai wheat area, we selected 3 cultivation modes which were named T1, T2and T3integrated by sowing date and density, irrigation time, fertilizer level and method in Xinxiang county of Henan Province during2013—2014 with the local traditional cultivation mode(FM) and the non-fertilizer mode(CK) as control.We analyzed the accumulation and translocation of dry matter and nitrogen(N), and discussed the accumulation, translocation characteristics of dry matter and N, and utilization efficiency of light and heat resources.The results showed that grain yield, photothermal utilization efficiency, dry matter accumulation, translocation rate and N translocation efficiency were the highest under T2mode.Total N accumulation and N translocation under T3were highest, while N accumulation after anthesis under FM and T1were significantly higher than those under CK, T2and T3.N surplus and apparent N loss under T1showed higher than those under other modes.Correlation analysis showed that the total dry matter accumulation and N translocation after anthesis of winter wheat had significant positive correlation with the utilization of light and heat resources(P＜0.01).There had been significant positive correlation among dry matter accumulation after anthesis, total N accumulation and the utilization efficiency of light and heat resources(P＜0.05).Total dry matter accumulation, dry matter accumulation after anthesis, and N transport rate showed positive correlation with grain yield(P＜0.05).Considering the utilization efficiency of light and heat resources, grain yield, and the ratio of output to input, T2was the high-producing and efficient cultivation pattern currently.