国审玉米新品种陇单336选育报告

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中图分类号：S513 文献标志码：Adoi：10.3969/j.issn.2097-2172.2025.07.009

文章编号：2097-2172（2025）07-0644-04

Breeding Report on the Nationally Approved New Maize Variety， Longdan 336

ZHOU Yuqian， LI Yongsheng， HE Haijun， YANG Yanzhong， WANG Xiaojuan， LIAN Xiaorong， ZHOU Wenqi，DONG Xiaoyun，MA Zengke （Crop Research Institute， Gansu Academy of Agricultural Sciences，Lanzhou Gansu 73oo7o， China）

Abstract：To promote the development of maize production in Gansu Provinceand meet practical needs，anew maize variety Longdan336，whichisighandstableyielding，high-qualityanddisease-resistant，wassucessullybred troughgerplasm inovationandsuperiorgeneagregation.Longdan336isahybriddevelopedusingBSKKa570asthefemaleparentandBKZ82as the maleparent.Durng 2014to2O15，regionalcomparisonexperiment wasconductedat32sitesacross Gansuin2a，where Longdan 336 achieved an average yieldof 10O80.O kg/ha，8.8% higher than thecontrol variety Demeiya 3，with a 100% yield increase site rate.Inthe2O2Oproductionexperimentofthenorthernearlymaturingspringmaizeconsortium，Longdan336recordedanaverage yield of 11 172.0kg/ha，an increase of 349.5 kg/ha or 3.2% over the control. This variety has an average growth period of 125.9 days，plantheightof272.5cm，arheightof02.5cm，earlengthof18.5to19.2c，15.0to18.0kerelrowsperearardiameter of 4.8 to 5.2 cm，1 000-kernel weight of 372g， ，and kernel rate of 84.3% . It is suitable for cultivation in early-maturing spring maize regions such as Heilongjiang， Gansu， Inner Mongolia，Ningxia， Jilin，Hebei，and Shanxi.

KeyWords：Maize;Newvariety;Breeding;Longdan 336; High yield

玉米作为全球性战略主粮作物，兼具高营养价值和多重工业属性，不仅是人类主粮保障，也是养殖领域核心饲料来源，同时作为食品、医药、轻工及化工等深加工领域的基础原料[1-3]。（剩余5201字）