摘要
在中等肥力条件下,通过不同的灌水量和灌水次数,以熟性相当的白色棉中熟品种作对照,考查两个彩色棉品种的抗旱性能。结果表明：灌水量不影响白色棉纤维的色泽度,但对彩色棉的色泽度有一定的影响,随着灌水量的减少,彩色棉纤维色泽度降低;灌水量对彩色棉和白色棉的纤维比强度、马克隆值都不产生明显的影响,但对纤维长度影响较大,尤其是少水处理（B2）的影响最大,其中少水处理（B2）和高水处理（CK）相比,A1、A2、A3三品种纤维长度分别减小0.8 mm、1.1 mm和0.9 mm;随着灌水量和灌水次数的减少,各品种生育期均相应提早,但对彩色棉生育进程的影响较小,其中少水处理（B2）与高水处理（B5）相比,两个彩色棉品种生育期分别较对照减少17d和16 d,而A3白色棉对比品种较对照减少20 d;随着灌水量和灌水次数的减少,各品种蕾铃脱落率增高,产量下降,但彩色棉两品种均较白色棉品种蕾铃脱落率低4.1%~7.0%,产量降幅小1.0%~10.9%,表现出较强的抗旱性能。
Naturally colored cotton usually has characters of quick growing and strong resistance to drought.Under the condition of middle fertile soil and different irrigation times,the research is designed to investigate the characteristics of two naturally colored cotton varieties to resist to drought compared with a white variety.The result shows that irrigation affects the fiber color of the colored cotton only and lower irrigation times could change the fiber color to light. Irrigation affects the fiber strength and Mac.less,but affects the fiber length more of the two kinds of cotton.Comparing treatment B2 with B5,fiber length of varieties A1,A2,A3 decreased 0.8 mm,1.1 mm and 0.9 mm than B5 respectively.Amount and times of irrigation affect apparently to the plant growing days,boll lose and yield of two kinds of cotton but affect the colored cotton varieties less than the white one.Using a method of reducing irrigation times will lead up to boll lost more and yield decrease more of every varieties in trial.But two naturally colored cotton varieties lose less bolls of 4.1 percent to 7.0 percent,yield decrease lower 1.0 percent to 10.9 percent and growing days shorten 3 d to 4 d than white one.Therefore the research has proved that two naturally colored cotton varieties have characteristics of higher resistance to drought compared with the white cotton variety.
出处
《干旱地区农业研究》
CSCD
北大核心
2010年第4期112-116,共5页
Agricultural Research in the Arid Areas
基金
国家转基因生物新品种培育重大专项"西北干旱区转基因抗旱彩色棉新种质创制研究"(2009ZX08005-013B)
关键词
彩色棉
灌水量
抗旱特性
naturally colored cotton
amount of irrigation
characters of resistance to drought
