甜高粱杂交种陇甜1号(Tx623A/LY3002)以Tx623A为母本、LY3002为父本杂交组配而成。2017 — 2018年参加甘肃省高粱品种青贮组区域试验，2 a 10点(次)区试鲜草平均折合产量102 078 kg/hm2，较对照品种辽甜6号增产7.5%。生育期135 d左右，平均株高332 cm，茎粗1.68 cm，平均分蘖数1.7个。茎秆含糖锤度19.8%～20.7%。抗高粱丝黑穗病，接种发病株率4.2%；抗大斑病；抗高粱蚜。

Longtian 1 was a new sweet sorghum cultivar， with parents combination of sterile line Tx623A and restorer line LY3002. In 2017 — 2018， the average yield of green forage in 2 a 10 sites(times) was 102 078 kg/hm2，7.5% higher than the control Liaotian 6 in the Gansu Silage Sorghum Regional Test. The growth period was about 135 d， plant height was 332 cm， main stem diameter was 1.68 cm， average tiller number was 1.7 and stalk sugar content was 19.8%～20.7%. It was high resistant to sorghum head smut， with incidence rate was 4.2%， resistant to big spot disease and sorghum aphid.

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甘肃省农业科学院生物技术育种专项“粮饲兼用作物种质鉴定与品种选育”(2019GAAS07)；甘肃省农业科学院科技支撑计划项目(2017GAAS44)；甘肃省农业科学院院地科技合作项目(2017GAAS59)。