‘酒棉8号’棉花新品种膜下滴灌栽培示范

Cultivated demonstration of a new cotton cultivar'Jiumian No.8' by drip irrigation under mulch-film

选用新疆、辽宁和甘肃的14个棉花新品种,以‘新陆早7号’为对照,结合膜下滴灌技术进行了适宜民勤农业生态环境种植的棉花新品种的筛选及膜下滴灌丰产栽培技术的研究.结果表明:‘酒棉8号’新品种光合速率较高(9.60μmol.m-2.s-1),蒸腾速率较低(102.6g.m-2.h-1),平均单铃4.46g,早熟性好,籽棉产量高,该品种在栽培密度为20 000株.(667m-2)、控制株高44.6cm左右、平均单株有效铃数4.3个、全生育期内控制膜下滴灌量为240m3.(667m-2)的情况下产量最高,是民勤县具有推广潜力的棉花膜下滴灌栽培新品种.

Fourteen new cotton cultivars from Xinjang,Liaoning and Gansu were chosen as the experiment materials,and ＇Xinluzao No.7＇ was taken as the control,the new cotton cultivars that adapted to the agricultural environment of Minqin were selected out by drip irrigation under mulch-film.The results indicated that the new cultivar ＇Jiumian No.8＇showed higher photosynthesis（9.60 μmol·m^-2·s^-1） and lower transpiration（102.6 g·m^-2·h^-1）,and average weight of per cotton boll was 4.46 g.In addition,＇Jiumian No.8＇also had well prematurity and high seed cotton yield,so it＇s a new cultivar with extension potential in Minqin.The cultivar had the highest yield with the cultivating density 20 000 plants per 667 m^-2,plant height 44.6 cm,average plant bolls 4.3 and 240 m^3 drip-irrigation volumes per 667 m^-2 in the whole growth stages.