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我院1975年小麦高产栽培试验田平均亩产894.2斤(最高产田块为940.1斤),1976年平均亩产897斤,1977年虽然遇到严重湿害和赤霉病,平均亩产仍达到825斤。根据三年实践,就小麦高产稳产的几个关键问题,初步加以分析总结。一、不同高产途径与穗粒数的关系小麦产量的高低,穗数是基础,但是每亩穗数、每穗粒数和千粒重之间,存在不同程度的负相关。在低产变高产情况下,由于水肥等条件的限制,群体较少、穗数不足是提高产量的主要矛盾;在改善肥水
In our hospital, in 1975, the average yield per mu of wheat high yielding cultivation field was 894.2 kg (the highest yielding field was 940.1 kg). In 1976, the average yield per mu was 897 kg. In 1977, despite severe wet injury and scab, the average mu yield still reached 825 jin. According to the three years of practice, a few key issues concerning the high and stable yield of wheat were initially analyzed and summarized. First, the relationship between different high-yielding ways and the number of grains per spike The level of wheat yield, the number of spikes is the foundation, but there is a certain degree of negative correlation between the number of spikes per panicle, grains per spike and grain weight. In the case of low yield and high yield, due to the constraints of water and fertilizer and other conditions, fewer groups, insufficient spike is the main contradiction to improve yield; improve fertilizer and water