灌区冬麦后复种玉米适宜移栽期研究

An Experimental Study of Suitable Transplanting Period of Multiply-cropped Maize after Winter Wheat in Irrigation Area

在冬麦后进行籽粒型玉米适宜移栽期试验,结果表明:籽粒型玉米品种生育期在80 d左右的,在6月20日前育苗,6月30日前进行移栽,玉米单株性状较好、籽粒产量较高、空秆率较低,且能保证籽粒正常成熟,移栽较易成功;生育期在120 d左右的品种,由于生育期较长,没有形成籽粒。

An experiment was conducted on the suitable transplanting period of the grain-type maize multiply-cropped after winter wheat. The result showed that for the grain-type maize variety with a growth stage of about 80 days, when the seedlings were raised before June 20 and the transplanting was carried out before June 30 the single plant trait of the maize was better, the grain yield was higher, the rate of empty stalk was lower and the normal maturing of the seeds could be guaranteed, thus the transplanting could be successful easily. For the variety with a growth stage of about 120 days the grain was not formed due to a relatively long growth stage.