新疆农业科学2025，Vol.62Issue(5)：1075-1083,9.DOI:10.6048/j.issn.1001-4330.2025.05.004
钾肥配施及用量对膜下滴灌棉花生长发育及产量的影响
Effects of potassium fertilizer rationing and dosage on the growth,development and yield of cotton under membrane drip irrigation
摘要
Abstract
[Objective]To investigate the effects of potash fertilizer distribution and dosage in cotton pro-duction and clarify the most suitable potassium application level for cotton growth under drip irrigation under membrane in Xinjiang.[Methods]Four potash dosages were set,i.e.,60,90,120 and 150 kg/hm2 of pure potassium(K2O),which were expressed as K1,K2,K3 and K4,respectively;and two kinds of potash fertiliz-ers,i.e.,potassium sulphate and potassium sulphate+potassium humate(1∶1 ratio),which were expressed as A and B,with eight treatments in total,and no potash fertilizers were applied to CK as the control.[Re-sults]The experiment showed that plant height of cotton in all treatments was greater in AK4 treatment,but not significantly different from BK4.Stem thickness reached the maximum in BK4 treatment,but there was no significant difference with AK3,AK4 and BK3;SPAD value showed a trend of increasing and then decreasing in each treatment,and reached the maximum in AK4 treatment in the boll stage,but there was no significant difference with AK3,BK3 and BK4;Dry matter accumulation increased slowly and then rapidly with the pro-gress of fertility,and reached the maximum at the full-bell stage,and the dry matter accumulation of BK4 treatment was the highest among all treatments,but there was no significant difference with AK3,AK4 and BK3;Intercellular CO2 concentration and net photosynthetic rate at the boll stage increased with the increase of fertilizer application,and transpiration rate and stomatal conductance decreased and then increased with the increase of fertilizer application.The seed cotton yield of both potash treatments increased with the increase of fertilizer application,and the BK4 treatment had the highest yield,but there was no significant difference with AK3,AK4 and BK3.[Conclusion]Considering the factors together,potassium sulfate compounded with po-tassium humate treatment is superior to potassium sulfate treatment alone,and BK3 treatment is the best treat-ment.关键词
钾肥/棉花/干物质/光合/产量Key words
potassium fertilizer/cotton/dry matter/photosynthesis/yield分类
农业科技引用本文复制引用
穆光荣,巴特尔·巴克,李杰,古丽娜孜·居来提,娄善伟,帕尔哈提·买买提,马腾飞,张鹏忠,吴湘林,张立祯..钾肥配施及用量对膜下滴灌棉花生长发育及产量的影响[J].新疆农业科学,2025,62(5):1075-1083,9.基金项目
农业农村部西北绿洲农业环境重点实验室开放基金(XBLZ-20222) （XBLZ-20222）
新疆"天山英才"培养计划(2023TSYCTD004) Open Fund for the Northwest Oasis Agro-Environment Key Laboratory of the Ministry of Agriculture and Rural Affairs(XBLZ-20222) （2023TSYCTD004）
Xinjiang"Tianshan Talents"Training Program(2023TSYCTD004) （2023TSYCTD004）
