宽垄沟灌对夏玉米生育进程及产量的影响

通过2013-2015年3年的大田试验，研究了宽垄沟灌和传统种植模式对夏玉米生育进程及产量的影响。结果表明：不同种植方式下，水分胁迫均对作物的生育进程有影响，夏玉米生育周期均随着水分处理的增大而延长；与常规种植方式相比，宽垄沟灌方式下，夏玉米的生育周期延长了1-4d。过低或过高的水分胁迫均会抑制作物的正常生长，导致灌浆速度缓慢，适当水分处理（L-70）能有效促进籽粒增长，达到节水高产的效益。2013-2015年夏玉米的产量及其构成因子基本上都随着灌水量的提高而增加，较常规种植，宽垄沟灌方式下夏玉米平均增产率为2.38~6.04%。说明宽垄沟灌能有效改善夏玉米穗部性状，促进籽粒灌浆，达到夏玉米节水高产的目标。

英文摘要:

Through three years of field trials from 2013 to 2015 year, studied the effect on growth process yield of summer maize under wide ditch irrigation and traditional planting patterns. The results showed that the stress of water both have the effect on the reproductive process under different planting patterns,the growth period of summer maize both increased with the increase of water treatment and extended from 2013 to 2015 year, compared with conventional planting, the reproductive cycle time of summer corn extended 1 to 4d; Too low or too high water stress can inhibit the normal growth of crops, the proper water treatment (L-70) can effectively promote the grain growth, achieve the benefit of water saving and high yield. The yield and its components of summer maize increased with the increase of irrigation amount from 2013 to 2015 year, compared with conventional planting, the average yield of summer maize increased by 2.38 ~ 6.04% in the wide ridge planting from 2013 to 2015 year.This suggests that the wide ridge cultivation can effectively improve maize ear traits, promote grain filling, achieve the goal of water saving and high yield of Summer Maize.

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