干旱年份冀南旱作棉花单产籽棉4 500 kg·hm-2栽培技术
贾永庆, 刘文祥, 苗培增
干旱年份冀南旱作棉花单产籽棉4 500 kg·hm-2栽培技术
Cultivation technology for 4 500 kg·hm-2 of seed cotton yield in Southern Hebei Province in drought years
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