吉林省玉米高产田产量构成要素分析

通过对吉林省玉米不同产量水平地块产量构成要素的分析,探讨了公顷穗数、穗粒数、百粒重、公顷粒数对产量的贡献和产量由低向高转变过程中产量构成要素的变化。根据产量构成要素对产量的贡献大小将不同品种类型分为增穗增产型、增穗和穗粒数增产型、增穗粒数和百粒重增产型、全能增产型等。提高玉米产量应根据产量构成要素的变化和品种的增产类型,相应的采取不同措施。

Analysis on Maize Yield Component Factors of High-yield Plots in Jilin Province

The analysis analyzed different maize production levels,discussed the distribution of every yield component factors to different production levels and the changes of yield component factors that changed along with different production levels.According to the distribution of every component factors to yield production,maize varieties are divided into several yield-increased types such as the type of increasing ears to improve yield,increasing ears and kernels pre ear to improve yield,increasing kernels per ear and 1 000 kernels weight to improve yield and increasing anyone of component factor to improve yield.The choosing method to improve maize yield is lie on what type of yield-increased the variety is and how the yield component factors change along with different production levels.