摘要
【目的】研究库尔勒香梨产量与土壤养分状况的关系,为提高库尔勒香梨产量和科学施肥提供参考依据。【方法】在库尔勒地区29、30、31和33团选择代表性高、中、低产香梨园12个,分别采集0~20、20~50和50~80 cm土层土壤样品,测定不同产量的库尔勒香梨园中土壤营养元素含量,分析库尔勒香梨产量与土壤矿质元素之间的关系。【结果】供试的12个库尔勒香梨园土壤偏碱性,土壤养分表聚化明显,库尔勒香梨园20~50 cm土层有机质、镁、碱解氮、速效钾、有效铜、有效铁含量与香梨高产呈显著正相关,总盐、p H值和钙含量与高产无显著差异,但有效锰含量与高产呈显著负相关。【结论】库尔勒地区香梨园应适当增施酸性肥料,调节土壤碱度。在实际生产中重视施用有机肥,加强香梨园土壤镁、氮、钾、铜和铁素的补充,注意各种养分的平衡施用,减少锰肥的施用量。建议有机肥施肥深度为50~60 cm。
[ Objective] The objective of this study is to investigate the relationship between Korla fragrant pear yield and soil nutrient in order to provide a theoretical basis for yield and scientific fertilization. [ Meth- od ] Soil samples from different layers （0 -20 cm, 20 -50 cm and 50 -80 cm） were collected from 12 high, medium and low yield pear orchards located in 29, 30, 31 and 33 regiments in Korla region, respectively. [ Result]The soil of the 12 tested fragrant pear orchards was slightly alkaline. Soil nutrient polymerized signif- icantly. The content of organic matter, magnesium, nitrogen, available potassium, available cuprum, availa- ble ferrum in the 20 - 50 cm soil layer was significantly positively correlated with the high yield. There was no significant difference among the total salt, pH and calcium, but available manganese content was significantly negatively correlated with the high yield. [ Conclusion ] Korla fragrant pear orchards should increase acid fertil- izer to regulate the soil alkalinity. In the practical production, the application of organic fertilizer, magnesi- um, nitrogen, potassium, cuprum and ferrum should be enhanced in the tested pear orchards. It is recommen- ded that organic fertilization depth should be 50 -60 cm.
出处
《新疆农业科学》
CAS
CSCD
北大核心
2016年第4期635-640,共6页
Xinjiang Agricultural Sciences
基金
新疆兵团科技支疆计划项目(2014AB002)
新疆兵团区域创新团队建设项目(2013CC006)~~
关键词
库尔勒香梨
土壤养分
产量
相关性
Korla fragrant pear
soil nutrient
yield
correlation analysis
