商品有机肥替代部分化肥对连作棉田土壤养分、棉花生长发育及产量的影响

卢合全, 唐薇, 罗振, 孔祥强, 李振怀, 徐士振, 辛承松

Effects of commercial organic fertilizer substituting chemical fertilizer partially on soil nutrients, plant development, and yield in cotton

LU He-Quan, TANG Wei, LUO Zhen, KONG Xiang-Qiang, LI Zhen-Huai, XU Shi-Zhen, XIN Cheng-Song

表1 施肥处理及施用方式

Table 1 Treatments and methods of fertilizer applications from 2016 to 2018

处理 Treatment	肥料用量及施肥方式 Amounts and methods of fertilizer applications
NF	不施化肥, 也不施有机肥。No fertilizer.
NPK	基肥: 尿素(N 46%) 67.80 kg hm^-2+复合肥(16-22-6) 442.50 kg hm^-2+硫酸钾(K₂O 50%) 54.90 kg hm^-2; 见花时追肥: 尿素332.55 kg hm^-2+硫酸钾162.00 kg hm^-2。 Urea 67.80 kg hm^-2, compound fertilizer 442.50 kg hm^-2, and K₂SO₄54.90 kg hm^-2 were applied as basal fertilizer; urea 332.55 kg hm^-2, and K₂SO₄162.00 kg hm^-2 were applied as topdressing when seeing first flower.
COF	基肥: 商品有机肥(有机质50%, N 2.0%、P₂O₅1.5%、K₂O 2.5%) 1200.00 kg hm^-2。 Commercial organic fertilizer (organic matter 50%, N 2.0%, P₂O₅ 1.5%, K₂O 2.5%) 1200 kg hm^-2 were applied as basal fertilizer.
NPK+COF	基肥: 尿素(N 46%) 67.80 kg hm^-2+复合肥(16-22-6) 442.50 kg hm^-2+硫酸钾(K₂O 50%) 54.90 kg hm^-2+商品有机肥(有机质50%, N 2.0%、P₂O₅1.5%、K₂O 2.5%) 1200.00 kg hm^-2; 见花时追肥: 尿素332.55 kg hm^-2+硫酸钾162.00 kg hm^-2。 Urea (N 46%) 67.80 kg hm^-2, compound fertilizer (16-22-6) 442.50 kg hm^-2, K₂SO₄ (K₂O 50%) 54.90 kg hm^-2, and commercial organic fertilizer (organic matter 50%, N 2.0%, P₂O₅ 1.5%, K₂O 2.5%) 1200 kg hm^-2 were applied as basal fertilizer; urea 332.55 kg hm^-2 and K₂SO₄ 162.00 kg hm^-2 were applied as topdressing when seeing first flower.
0.70NPK+COF	基肥: 尿素(N 46%) 47.46 kg hm^-2+复合肥(16-22-6) 309.75 kg hm^-2+硫酸钾(K₂O 50%) 38.43 kg hm^-2+商品有机肥(有机质50%, N 2.0%、P₂O₅1.5%、K₂O 2.5%) 1200.00 kg hm^-2; 见花时追肥: 尿素232.78 kg hm^-2+硫酸钾113.40 kg hm^-2。 Urea (N 46%) 47.46 kg hm^-2, compound fertilizer (16-22-6) 309.75 kg hm^-2, K₂SO₄ (K₂O 50%) 38.43 kg hm^-2, and commercial organic fertilizer (organic matter 50%, N 2.0%, P₂O₅ 1.5%, K₂O 2.5%) 1200 kg hm^-2 were applied as basal fertilizer; urea 232.78 kg hm^-2 and K₂SO₄ 113.40 kg hm^-2 were applied as topdressing when seeing first flower.