晚栽洋葱鳞茎栽植密度对种株生长及种子产量和质量的影响

Effect of Late Planted Onion Bulbs Planting Density on Seed-plant Growth,Yield and Quality

以"莱农5号"洋葱为试材,于11月28日栽植洋葱鳞茎,设每667m2栽植3 700株(T1)、4 400株(T2)、5 000株(T3)、6 000株(T4)4种栽植密度处理,探讨不同栽植密度对洋葱种株生长及种子产量和质量的影响。结果表明:在种株营养生长、生殖生长、种子质量的测定指标中,T1、T2、T3各指标差异不明显,T4各指标与T1、T2、T3差异显著,发病率较高;在种子产量方面,T3产量较高,分别比T1、T2、T4增产23.03%、14.41%、50.28%。因此,晚栽的洋葱鳞茎栽植密度以T3处理,即每667m2栽植5 000株为宜,栽植密度过大、过小都达不到产量高、品质好的目的。

‘Cainong No.5＇onion was used as test material,bulbs of onion were planted in November 28 th,and the planting density was divided into 4treatments,which were 3 700（T1）,4 400（T2）,5 000（T3）,6 000（T4）plant per 667m2,to discuss the effect of late planted onion bulbs planting density on seed growth,yield and quality.The results showed that,at the index of testing in plant nutrition growth,reproduction growth,seed quality,there was no obvious difference in T1,T2 and T3,the differences of every index in T4 was significant with T1,T2 and T3and the incidence of T4 was high.In seed production,the yield of T3 was higher than that of T4,T2 and T1,increased production by 23.03%,14.41%,50.28%respectively.Therefore,the planting density of late planted bulbs of onion in T3 with 5 000 plant per 667m2 was appropriate,the planting density larger or smaller could not achieve goal with high yield of seed,good quality of output.