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俄克拉何马州静水地区3年来在一个地点的多次试验中,研究了陆地棉6个栽培品种,以便测定开花期对成铃率和特定的纤维特性的影响。每周在花朵上挂一次标签。霜后在小区内按标签记载的日期摘收棉铃。每行挂签的开花日期、座桃数目和成铃率都要加以记载,保存下来。同时还研究纤维特性(2.5%夸长、50%夸长、整齐度指数,气流测定细度值和1/8英寸束强)以测定其变异规律。总的说来,挂有标签的开花数量自花期开始即不断增多,直到花期中期刚过时才停止增加,然后数量下降,进而形成相当匀称的分布。成铃数量在开花季节的头3周内增长很快,然后逐步下降。在季节开始
Over the three years in Oklahoma’s hydrostationary area, several experiments were conducted on six cultivars of upland cotton to determine the effect of flowering on the boll rate and specific fiber properties. Hang the flowers once a week on the label. Cream in the district according to the date of the label record cotton bolls. The flowering date of each line of hanging sign, the number of peach and boll rate should be recorded, preserved. Fiber properties (2.5% exaggerated, 50% exaggerated, uniformity index, air flow fineness, and 1/8 inch beam intensity) were also studied to determine their variation. In general, the number of tagged blossoms increased from the beginning of the flowering period until the flowering period was over, then stopped increasing, then the number decreased, resulting in a fairly symmetrical distribution. The number of bolls grew rapidly during the first 3 weeks of the flowering season and then decreased gradually. In the beginning of the season