摘要
为探明在盐碱胁迫条件下水稻植株对氮磷钾养分吸收的影响,研究了宁夏前进农场碱化土壤在不同施肥措施下的培肥效果及不同施肥措施对水稻氮磷钾养分吸收的影响。结果表明:无论耕地、荒地,土壤pH值、全盐含量在收获后均有不同程度的降低,土壤碱解氮含量在收获后分别上升了67.2%和24.5%;速效磷含量在收获后分别降低了3.6%和52.3%;速效钾含量在收获后分别降低了5.2%和15.8%。在不同施肥措施下,水稻茎、叶全氮含量先呈上升的趋势,而后呈持续下降的趋势;全磷含量呈持续下降的趋势;全钾含量的变化表现出了先上升到平缓再下降的变化趋势。
In order to find out the influence of NPK nutrient uptakeing of rice plant in salinity-alkalinity stress con- dition, different fertilizing measures were studied on the Qianjin farm in Ningxia. The results showed that soil pH value and total salt content reduced at different degree regardless of cultivated land or wasteland after harvest. Soil alkali-hydro nitrogen eontent after harvest increased by 67.2% and 24.5 % respectively, rapidly-available phosphorus reduced by 3.6% and 52.3%, and rapidly-available potassium content reduced by 5.2% and 15.8%. In different fertilizing measures, rice stems, leaf total nitrogen content showed a rising trend first, and then a declining one, while total phosphorus was all in a declining trend. The total potassium content showed first rising gently and then declining.
出处
《干旱地区农业研究》
CSCD
北大核心
2011年第6期115-118,129,共5页
Agricultural Research in the Arid Areas
基金
国家科技支撑计划课题(2007BAC08B03)
关键词
施肥措施
土壤培肥
水稻
养分吸收
fertilizing measure
soil fertility
nutrient uptaking
