摘要
采用田间试验法,探讨了容城县冬小麦高、中、低产田土壤速效磷钾的供肥能力。结果表明:高、中、低产田土壤磷素贡献率分别为82.37%、90.36%和84.82%,土壤钾素贡献率分别为88.68%、85.89%和87.05%;土壤的供磷能力分别为67.64 kg/hm2、63.75 kg/hm2和57.11 kg/hm2,土壤的供钾能力分别为145.64 kg/hm2、121.19 kg/hm2和117.22 kg/hm2。表明该区土壤中的磷钾不是限制冬小麦产量的主要因素。
The soil available phosphorus and potassium supply capacity in wheat fields with different yield levels were discussed in Rongcheng County.The results showed that P contribution rates in high,medium and low yielding fields were 82.37%,90.36% and 84.32%,and K contribution rates were 88.68%,85.89% and 87.05%,respectively.P supply ability in high,medium and low yielding fields were 67.64 kg/hm2,63.75 kg/hm2 and 57.11 kg/hm2,and K supply ability were 145.64 kg/hm2,121.19 kg/hm2 and 117.22 kg/hm2,respectively.That was to say P and K in soil were not the main factors limiting the yield of wheat.
出处
《河北农业科学》
2010年第5期48-49,共2页
Journal of Hebei Agricultural Sciences
关键词
容城县
土壤
速效磷
速效钾
供肥能力
施肥量
Rongcheng County
Soil
Available phosphorus
Available potassium
Fertilizer supply ability
Fertilizer amount
