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一、试验材料和方法本试验设置了三个播期(4/20、5/3、5/15)和二种密度(2,500、4,000株/亩),随机区组排列。重复三次,小区面积0.03亩。供试品种岱红岱。自始花后不久,每5天一次对各处理当天开的花挂牌标记,每个处理组合每天挂牌
I. Test Materials and Methods Three sowing dates (4/20, 5/3, 5/15) and two densities (2,500, 4,000 plants / mu) were set up in a randomized block arrangement. Repeat three times, residential area of 0.03 acres. The test varieties Daihong Dai. Not long after the beginning of the flower, once every 5 days, the flowers on the day of the opening were marked with flowers, and each treatment group was listed daily