摘要
无论直播或套种,密度适宜时竖叶中穗型杂交种豫玉2、5号增产潜力最大,鉴于麦垄点(套)种时不易密植,故更适合麦后直播,若能在麦垄点(套)种时适宜密植其增产潜力更大;平展叶大穗型的丹玉13号在稀植时具有一定增产优势,因而更适合麦垄点(套)种;中间型的豫玉1、3号介于前两类之间,直播或点(套)种均可。本文对各类杂交种在不同条件下的适宜密度及其密度适宜时对施肥的产量响应等进行了研究,并由通径分析结果提出了各类杂交种栽培管理的主攻方向。通过对竖叶型杂交种增产原因的分析,提出竖叶大穗型可兼容耐密和大穗两大高产要素,应作为玉米高产育种的主攻目标。
Vertical leaf and middle ear hybrid corn Yuyu 2 and Yuyu 5 planted withsuitable density have the highest yield potentiality whether to adopt direct se-eding or interplanting with wheat.(the former is preferable.)Open an flat andbig ear hybrid Danyu 13 has fairly high yield superiority in looser density,thus interplanting is in favor to it.Both direct seeding and interplanting aregood for intermediate type hybrids Yuyu 1 and Yuyu 3.According to the resu-lts of pass analysis,the main cullivate measures were raised.
出处
《河南农业大学学报》
CAS
CSCD
1990年第1期99-107,共9页
Journal of Henan Agricultural University
