平罗县广大贫下中农在批林批孔的推动下,不信天命干革命,解放思想,大胆创新,在3,800亩麦田上成功地进行了小麦旱追肥的试验示范。实践证明,旱追肥比头水追肥增产5.8～37.8％。社员群众说:旱追肥就是好,节省肥料损失少,施肥及时产量高,要想丰收少不了。一、旱追肥为什么能增产? 旱追肥就是在小麦淌头水前,用播种机将化肥播入土内。因春小麦一般在4月初出苗后12天左右开始分蘖,进行幼穗分化(社员称“座胎”),这时是小麦最需要水分、养分的时期,也是决定大穗的关键时期。按照旧习惯一般在5月上旬才灌水追肥,这就不能满足小麦的水 The vast majority of poor and middle peasants in Pingluo county, under the impetus of criticizing Lin Pi Kong, did not believe in destiny revolution, emancipated their minds and boldly innovated the pilot demonstration of wheat dry dressing in 3,800 mu of wheat fields. Practice has proved that dry top dressing fertilizer than the head-water yield 5.8 ~ 37.8%. Members of the masses said: Dry top dressing is good, less fertilizer to save the loss, fertilization and timely production of high, in order to harvest and ultimately. First, dry top dressing Why can increase production? Dry top dressing is in the wheat drip head water, seeder sowing fertilizers into the soil. Since spring wheat generally starts tillering at about 12 days after emergence in early April and spikelets are differentiated (members are referred to as “embryo”), then wheat is in a period most in need of water and nutrients and is also a crucial period for deciding large ears. In accordance with the old habits are generally top dressing in early May, which can not meet the water of wheat