Abstract:

In order to search the relation between cotton quality and main ecological geochemistry factor, with multiple target geochemical survey method, the correlation was studied between the cotton quality, integrated cotton fiber quality and the soil ecological geochemistry factor in plain area of Hebei Province. It was suitable for cotton growing in the alluvial flat of alluvial or diluvium plain compared with other landforms condition. There were suitable soil including light loam soil, sandy loam, loam soil of both fluvo-aquic soil and cinnamon soil, which conserved water and fertilizer well. And these kinds of soil were more suitable for cotton growth and increasing quality of cotton fiber. The soil nitrate nitrogen was in low or very low level, which the ratio was 69.06%. Most of available phosphorus was in low level, the medium and the high level only accounted for 18.24%, 3.07%. The medium and the high level of available potassium accounted for 31.97%, 44.67% respectively. The soil calcium content was abundant and distributed 8086-9658 mg/kg. The oxidation magnesium belonged to medium level or low level. Available sulfur content distributed mostly in very low or low level, and the ratio of medium level only was 15.45%. Available iron content was abundant, the medium and high level accounted for 51.82%, 42.73%. Available zinc was lack in most of area, and the ratio of medium and high only were 15.45%, 1.82%. Manganese, boron content was in right level. But available copper belonged to high level, which ratio reached 98.18%. In addition, the affection of phosphorus and potassium on cotton fiber quality were higher than nitrogen. B, Mn and S of elements content affected cotton fiber quality more highly than the other trace elements.