高产优质抗病玉米新品种君实618的选育及栽培技术

Breeding and Cultivation Techniques of a New Maize Variety Junshi 618 with High Yield,Good Quality and Disease Resistance

山西青卓玉米种子研究所以自育系JS331为母本、自育系JS340为父本,于2011年选育出具有高产、稳产、抗倒抗病、品质优、脱水快、出籽率高、低秆大穗、紧凑耐密、成熟时秸秆青绿以及适于机械收获、适应性广的新品种君实618,其抗逆性、商品性和产量等指标优于山西省主推品种先玉335。2014年参加山西省春播早熟组比较试验,平均产量为12 361.5 kg/hm2,比对照大丰30增产10.4%;2015—2016年参加山西省春播早熟组区域试验,2 a平均产量为12 702.0 kg/hm2,比对照大丰30增产9.5%;2017年参加山西省春播早熟组生产试验,平均产量为12 934.5 kg/hm2,比对照大丰30增产7.2%;淀粉含量为75.75%,属高淀粉品种;在山西春播生育期为130 d,需≥10℃有效积温2 750℃·d,适宜种植密度为6.00万～6.75万株/hm2,适宜东华北春播区种植。2018年5月通过山西省农作物品种审定委员会审定,审定编号为:晋审玉20180014。

Shanxi Qingzhuo Maize Seed Research Institute has bred a new variety Junshi 618 with high yield, stable yield, lodging resistance, disease resistance, good quality, fast dehydration, high seed yield, low stalk and big spike, compact and green straw at maturity, suitable for mechanical harvesting and wide adaptability in 2011. Its resistance, commodity and yield are stronger than Xianyu 335. In 2014, the variety participated in the comparative experiment of spring sowing and early maturing groups in Shanxi province, with an average yield of 12 361.5 kg/hm^2, which was 10.4% higher than that of the control Dafeng 30. From 2015 to 2016, it participated in the regional test of spring sowing and early maturing group in Shanxi province, with an average yield of 12 702.0 kg/hm^2 in two years, which was 9.5% higher than that of the control Dafeng 30. In 2017, it participated in the production test of spring sowing and early maturing group in Shanxi province, with an average yield of 12 934.5 kg/hm^2, which was 7.2% higher than that of the control Dafeng 30. Starch content is 75.75%, belonging to high starch varieties. The growth period of spring sowing in Shanxi is 130 d, the effective accumulated temperature≥10 ℃ is 2 750 ℃·d, the suitable planting density is 60 000-67 500 plants/hm^2, and it is suitable for planting in spring sowing areas in eastern and northern China. In May 2018, it was approved by Shanxi Crop Variety Approval Committee with the approval number of Jinshenyu 20180014.