“陕单7号”是我所育成的白粒杂交种,组合为“获白×武206”。近几年的试验示范和生产实践表明,该组合产量较高、耐病,通常情况下比陕单1号、白单4号、黄白单交增产10％以上。其秆低茎粗,穗粗粒大,生育期105～110天左右,比陕单1号早熟3～4天,是我省目前比较理想的夏玉米组合,不少地方正在积极扩大试种中。但去年在制种过程中,不少地方发生花期不遇现象,因此,需要 “Shan Dan 7” is a white hybrid I bred, a combination of “white × Wu 206.” In recent years, pilot demonstration and production practices show that the combination of higher yield, disease-resistant, usually more than Shandan 1, Bai Dan 4, yellow and white single-yield more than 10%. The stalk is low in stem diameter, coarse in stalk and coarse in grain, and has a growing period of about 105-110 days, which is 3 to 4 days earlier than that of Shaandan 1, which is an ideal combination of summer maize in our province. Many places are actively expanding trial planting . However, in the process of seed production last year, there were many occasions in which the flowering period was not met. Therefore, it was needed