Effects of N, P Fertilizer Reduction and K, Zn Fertilizer Interaction on Cotton Biomass, Yield and Nutrient Uptake

doi:10.6048/j.issn.1001-4330.2020.04.021

Abstract

Abstract: 【Objective】 To explore the effects of K and Zn fertilizer on cotton biomass, yield and nutrient uptake under the condition of N and P reduction in the hope of providing theoretical significance for the economic benefits of cotton and the sustainable development of cultivated land.【Methods】 Five treatments were set in the experiment. Treatment I: conventional fertilization (NP). Treatment II: 80% conventional fertilization (80%NP); Treatment: III: 80% conventional fertilizer + potash fertilizer (80%NP+K); Treatment: IV: 80% conventional fertilizer + zinc fertilizer (80%NP+Zn); Treatment V: 8% conventional fertilizer + potash + zinc fertilizer (80%NP+K+Zn).【Results】 Compared with farmers’ conventional fertilization (NP), 80% farmers’ conventional fertilization (80%NP) significantly reduced the biomass, yield and nutrient uptake and utilization of cotton. 80% of farmers who were accustomed to fertilizing Zinc fertilizer (80% NPZn) increased the absorption and utilization of cotton biomass, yield and nutrients compared with 80% farmers' conventional fertilization (80% NP), but it was lower than that of farmers' conventional fertilization (NP). There was no significant difference between conventional fertilization (80%NP+K+Zn) and conventional fertilization (NP).【Conclusion】 Under the condition of reducing fertilizer application, 80% conventional fertilizer + potash fertilizer + zinc fertilizer (80%NP+K+Zn) has the best effect on improving cotton yield and economic benefits in Xinxiang.

Key words: cotton; reduction of nitrogen and phosphorus; biomass; production; nutrient absorption

摘要： 【目的】在氮磷减施的条件下,研究钾锌互作与习惯施肥(以下简称习惯施肥)对棉花生物量、产量与养分吸收的差异,为棉花的经济效益和耕地可持续发展提供理论意义。【方法】设5个处理,处理1:习惯施肥(NP);处理2:80%习惯施肥(80%NP);处理3:80%习惯施肥+钾肥(80%NP+K);处理4:80%习惯施肥+锌肥(80%NP+Zn);处理5:80%习惯施肥+钾肥+锌肥(80%NP+K+Zn)。【结果】80%习惯施肥(80%NP)相比习惯施肥(NP)显著降低棉花生物量、产量及养分的吸收利用;80%习惯施肥+钾肥(80%NP+K);80%习惯施肥+锌肥(80%NP+Zn)较80%习惯施肥(80%NP)提高了棉花生物量、产量和养分的吸收利用,但低于习惯施肥(NP);80%习惯施肥+钾肥+锌肥(80%NP+K+Zn)与习惯施肥(NP)没有显著差异。【结论】在氮磷减施条件下,选择80%习惯施肥+钾肥+锌肥(80%NP+K+Zn)对提高新疆棉花产量和经济效益的效果最佳。

关键词: 棉花, 氮磷减施, 生物量, 产量, 养分吸收

CLC Number:

S562
S143

LI Yali, Harihash Yibati, ZHANG Yan, LI Yuan, LI Qingjun. Effects of N, P Fertilizer Reduction and K, Zn Fertilizer Interaction on Cotton Biomass, Yield and Nutrient Uptake[J]. Xinjiang Agricultural Sciences, 2020, 57(4): 746-753.

李亚莉, 哈丽哈什·依巴提, 张炎, 李源, 李青军. 氮磷减施与钾锌互作对棉花生物量、产量与养分吸收的影响[J]. 新疆农业科学, 2020, 57(4): 746-753.

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