摘要
为了对马铃薯合理施用钾肥提供依据,通过田间试验研究了两种不同类型钾源(硫酸钾与氯化钾)对马铃薯养分累积和产量的影响。结果表明:增施钾肥可以提高马铃薯苗期与花期植株中钾的含量,马铃薯花期硫酸钾和氯化钾处理植株中钾含量分别比对照提高了8.0%和3.5%。与对照比较,硫酸钾与氯化钾处理产量分别增产7.1%和12.0%,淀粉含量分别比对照提高了9.4%和14.5%。两种钾源间比较,氯化钾处理要优于硫酸钾处理,氯化钾处理马铃薯产量和淀粉含量均高于硫酸钾处理。在本试验条件下,可以用氯化钾肥料替代硫酸钾,不会对马铃薯产生负面影响,但用量不宜超过本试验条件下的90 kg/hm2。
A field experiment with different potassium fertilizer （K2SO4 fertilizer and KCl fertilizer） was carried out in Xiji county to study the effect of potassium on potato nutriment elements accumula tion and yield. The results showed that compared to CK treatment potato plant potassium content, nutriment elements accumulation and potato yield, as well as the starch content, can be increased by use of potassium fertilizer. With use of K2 SO4 fertilizer and KCl fertilizer, potato plant potassium content in blossom stage increased by 8. 0% and 3. 5%,potato yield increased by 7. 1% and 12. 0%, starch content increased by 9.4% and 14.5% respectively in comparison with CK treatment. Compared to K2 SO4 fertilizer treatment, KCl fertilizer treatment potato yield increased by 4.6 % and starch content increased by 4.7 % ,respectively. Under this experiment condition, with use of potassium fertilizer amount no more than 90 kg/hm^2 , KCl fertilizer have no negative impact on potato nutriment elements accumulation and yield.
出处
《西北农业学报》
CAS
CSCD
北大核心
2009年第1期143-146,共4页
Acta Agriculturae Boreali-occidentalis Sinica
基金
中国-加拿大政府间合作项目资助(IPNI项目)
国际科技合作项目-精准农业养分管理技术应用研究项目资助(2005DFA30750)
