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现就两个典型队(户县东街大队446.3亩平均亩产790.5斤,泾阳县永丰大队1,127亩平均亩产742.5斤)取得小麦高产的主要栽培技术进行分析: 一、群体结构问题从高产田块调查看,1978年其动态群体结构可归纳为三种类型(品种为阿勃): (一)基本苗16.7万,冬前总茎50万,春季最高分蘖85万,成穗55.8万,单株成穗3.3个,每亩总粒数达1,800万粒。产量结构指标:亩穗数55.8万,每穗粒数33.1个,千粒重40.4克。 (二)基本苗21万,冬前总茎80万,春季最高
Now on the two typical team (Huxian East Street Brigade average yield of 446.3 acres 790.5 pounds, Jingyang County Yongfeng brigade 1,127 acres average yield of 742.5 pounds) to obtain the main wheat cultivation techniques for high yield analysis: First, the group structure problems from high yield According to field survey, in 1978, the dynamic group structure can be divided into three types (variety: Abel): (1) 167,000 basic seedlings, 500,000 total stems before winter, the highest tiller number in spring is 850,000, the ear number is 558,000, 3.3 plants per plant, the total number of grains per acre reached 18 million. Yield structure indicators: 558,000 acres of spikelets, 33.1 grains per spike, grain weight 40.4 grams. (B) the basic seedlings 210,000, total winter stem 800,000, the highest spring