【摘要】 1998年夏季在草坪试验基地研究钾肥对草地早熟禾抗热性的影响。结果表明 ,施肥后临界半致死温度最高可以提高 6℃左右。以单施钾肥 1 .67g K2 O/m2的效果最好。磷钾混施时 ,随着钾与磷比例的增大 ,临界半致死温度呈增加趋势更多还原

【Abstract】 The studies on influence of potassium on heat resistance of Kentucky Bluegrass ( Poa pratensis L.) were conducted in summer of 1998 in Beijing.The results shows:medium lethal temperature(LT50)was increased by 6℃ or so after applying potash fertilizer;the ratio of K/P was increased and LT50 was increased in the treatments of mixed fertilizer of P and K.更多还原