小麦拔节期追施磷钾肥产量效应研究

小麦拔节期追施磷、钾肥试验研究表明:把适量的磷、钾肥后移至拔节期追施,有利于提高小麦的产量和穗数,且有一定的经济效益。在土壤磷、钾供肥能力分别为86.1%、82.1%,施磷量120kg/hm2,施钾量90kg/hm2的条件下,其中27.3%磷肥追施、31.9%钾肥追施的产量最高,为6169.7kg/hm2,增产12.65%,增收1021.7元/hm2。

Study on yield effects of dressing phosphate fertilizer and potassium fertilizer during jointing stage of the wheat

The tests of dressing phosphate fertilizer and potassium fertilizer are studied during jomtmg stage of the wheat. The results show that： it is helpful to improve wheat yield and ears through moving proper amount phosphate fertilizer and potassium fertilizer from basal application stage to jointing stage, and with the certain economic benefit. When the soil supplying nutrient capability of phosphorus and potassium are 86.1% and 82.1%, phosphorus and potassium application amount are 120 kg/hm^2 and 90 kg/hm^2, the yield using 27.3% of phosphorus application amount and 31.9% of potassium application amount for dressing is the highest with 6 169.7 kg/hm^2, increasing yield 12.65% and increasing 1 021.7 RMB Yuan/hm^2.