A Study on Adverse Resistance Cultural Techniques for Early Maturation in Cotton

doi:10.3321/j.issn:1000-7091.1999.03.020

Abstract

Abstract: The expriments were conducted from 1991 to 1993 to study the effects of key techniques such as planting density, chemical regulation, N, P, K, fertilizers and time of first water irrigation under the stress of weather on the yield and qualities of cotton in Shanxi privince. The results showed that first 1-2 noder and bollforming rate could be increased with planting density. Higher photosynthetic efficiency, good population type and canopy structure with dwarf plant, short sympodia, smaller leaver and bigger bolls could be obtained by chemical regulation. On the bases of higher population density with dwarf plants, chemical regulation, good quality and bigger bolls of on 1-2 nodes increased, early sowing could prevent from the stress of weather Early sowing combined with high population density and chemical regulation and with early water irrigation and fertilizer (N, P, K) dressing produced a high and stable yield. The theory have been applied to practice in large scale for 5 years and gainded significant yield increase, economic, social and ecological benefits.

Key words: Cotton, Early maturity, Adversity resistance, Chemical control

Fan Xiaoping, Su Caihong, Yang Shuqiao, Lei Xuemei, Li Yongshan, Fan Zhijie. A Study on Adverse Resistance Cultural Techniques for Early Maturation in Cotton[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1999, 14(3): 96-102. doi: 10.3321/j.issn:1000-7091.1999.03.020.

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