种植密度对小麦生长及产量的影响

Effects of Planting Density on the Growth and Yield of Wheat

[目的]研究不同种植密度对小麦生长及产量的影响。[方法]分析了种植密度对小麦群体性状、产量及其构成因素的影响。[结果]不同种植密度对小麦的生育期影响不明显。随着种植密度增加,在返青期前单位面积的群体量明显递增,至拔节期其差距逐渐缩小,趋于接近;适宜的种植密度可以提高小麦生育期间叶片的叶绿素含量,光合产物的合成与积累有所增加。小麦各生育时期群体性状也受种植密度的显著影响,过高或过低均对小麦群体发育及产量形成不利,种植密度适宜可改善小麦群体结构,从而提高产量。[结论]该研究为提高小麦产量提供理论依据。

[Objective]To research the effects of planting density on the growth and yield of wheat. [Method] We analyzed the effects of planting density on the wheat population chracters,yield and its component factors. [Result] Different planting densities had no significant effects on wheat growth period. With the increase of planting density,the unit area population showed an obvious increasing trend before returning greening stage,and the gap at the jointing stage gradually narrowed and tended to be close. Appropriate planting density could increase the chlorophyll content of the leaves during wheat growth,and enhance the photosynthate production accumulation. Planting density also had significant effects on the population traits of wheat at each growth stage. Too high or low planting density was not conducive to the development of wheat population and yield formation. Appropriate planting density could improve the population structure of wheat and further increase the yield. [Conclusion]This research provided theoretical basis for enhancing the wheat yield.