摘要
玉米杂交种田间测产是玉米育种和栽培科技成果评价的一项必要工作。研究了用果穗轴截面预测单株籽粒产量的方法,结果表明:(1)果穗轴截面承载力为2.02 g/cm2左右,是一个比较稳定的参数;(2)单株籽粒产量大约是果穗轴截面积的2.02倍;(3)单株籽粒产量的预测平均值与实际平均值十分接近,误差较少;(4)单株籽粒产量的预测平均值与种植密度的乘积能较准确地估计出单位面积籽粒产量,是一种简单易行、准确可靠的测产方法。
The estimation of grain yield of maize hybrids in field is necessary part of evaluating achievements of maize breeding and cultivation. The method of evaluating kernel yield/plant was studied by using ear axis section. The results indicated that: (1) the load of ear axis section is about 2.02g/ cm2, and it is a quite stable parameter; (2) grain yield/plant is about 2.02 times of area of ear axis section; (3) the estimated mean grain yield/plant is very close to actual mean grain yield/plant; (4) the product of estimated mean grain yield/plant and planting density can accurate estimate unit area yield, and it is a simple and accurate method for yield estimation.
出处
《甘肃农业大学学报》
CAS
CSCD
2001年第3期273-277,共5页
Journal of Gansu Agricultural University
基金
甘肃省科技厅"九五"玉米育种攻关项目(编号:GK971-3-6A)
