Effects of Late Harvest on Yield of Summer Maize with Different Mature Periods
Liu Shaokun
Jia Chunlan
Tang Shiwei
Sun Zhiqiang
Yang Jinsheng
Dong Shuting
Liu Jingguo
Abstract：Four maize varieties with different mature periods (Zhengdan 958,Xianyu 335,Denghai 605 and Denghai 618)were used as materials,and five harvest dates were designed to study the regulation effect of late harvest on summer maize yield.The results of two -year experiments showed that compared with the tradi-tional harvest time,when delaying 5 days to harvest,the average daily increment of Denghai 605 and Zheng-dan 958 was 83.8 and 83.6 kg/hm2 respectively,while that of Denghai 618 and Xianyu 335 was 109.7 and 158.1 kg/hm2 respevtively;when delaying 10 days to harvest,the average daily increment of Denghai 605 and Zhengdan 958 was 67.6 and 125.6 kg/hm2 respectively,while Denghai 618 and Xianyu 335 was 13.2 and 20.9 kg/hm2 respectively.For middle -early mature varieties (Xianyu 335 and Denghai 618),the kernel weight reached the maximum when harvested on October 5,and the filling process was basically completed. But for middle -late mature varieties (Zhengdan 958 and Denghai 605),the grain weight was still in the in-creasing period when harvested on October 10,so delaying harvest could markedly increase the grain weight and decrease the grain moisture content.In conclusion,suitable late harvest had more significant increasing effects on yield of middle -late mature varieties;under the premise of not influencing wheat seeding,the maize harvest time should be delayed as far as possible.
Keywords：Summer maizeVarieties with different mature periodsLate harvestYield increasing effect
Publication Date：2016-08-31
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 36-39 )