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1试验材料和方法试验于2004年在43团科技中心棉田内进行。供试棉花品种为冀668。试验田土壤为壤土,有机质0.7%,全氮0.059%,全磷0.051%,全钾0.038%。碱解氮32mg·kg-1,速效磷7.1mg·kg-1,速效钾170mg·kg-1。有机—无机复混肥(含氮16%,磷8%,钾1.2%,有机质≥28%,腐殖酸12%,生物菌
1 Test Materials and Methods Tests were conducted in 2004 at the TSPTC Cotton Field. Test cotton varieties for the Ji 668. Soil in the experimental field was loam soil with organic matter 0.7%, total nitrogen 0.059%, total phosphorus 0.051% and total potassium 0.038%. Nitrogen 32mg · kg-1, available phosphorus 7.1mg · kg-1, potassium 170mg · kg-1. Organic-inorganic compound fertilizer (nitrogen 16%, phosphorus 8%, potassium 1.2%, organic matter ≥ 28%, humic acid 12%, biological bacteria