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玉米是世界三大粮食作物之一,具有产量高、增产潜力大、适应性强的特点,只要温度、水分、光照条件适宜,无论是山区还是平原、酸性土壤还是碱性土壤,均可种植。随着现代化农业技术的进步,玉米新品种层出不穷,玉米单产不断提高,但在玉米大田生产当中,多穗现象却频频发生,不同年份、不同地区、不同品种发生程度不同;同一品种不同地区、不同耕作制度、不同的土壤条件发生程度也不同,多穗会造成第一果穗偏小,穗粒数少,影响产量,有的甚至造成空秆绝收,给玉米生产造成了很大的影响。
Corn is one of the three major grain crops in the world. It has the characteristics of high yield, large potential for yield increase and strong adaptability. As long as temperature, moisture and light conditions are suitable, it can be planted in both mountainous and plain areas, acidic or alkaline soil. With the improvement of modern agricultural technology, new varieties of maize are emerging in an endless stream, and the yield of maize is continuously increasing. However, in the production of corn field, the phenomenon of multiple spike occurs frequently. The occurrence of different spikes is different in different years, different regions and different varieties; Tillage system, different soil conditions occur in different degrees, more spikes will cause the first ear is smaller, fewer grains per spike, affecting the yield, and some even caused empty stalks crop, corn production has a great impact.