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玉米是一种高秆作物,在生长发育过程中,如果栽培不当或者遇到大风大雨等恶劣天气,最容易发生倒伏,严重时影响产量。玉米倒伏有茎倒、根倒、茎折断3种类型。1正确认识引起玉米倒伏的诸多因素1.1品种原因不同玉米品种在株高、穗位高度、根系发达程度、茎秆粗度和机械强度等方面都存在一定的差异,因而抗倒能力也有所不同。易发生倒伏的品种有:龙单16、合玉20、牡单九等,这些品种在黑龙江省曾大面积推广种植,产量较高,由于长时间种植种性退化、倒伏严重。
Corn is a high-stalk crop. During the process of growth and development, maize is most prone to lodging if it is cultivated improperly or encounters bad weather such as heavy rain, which will affect the yield seriously. Corn lodging stem down, root down, stem off 3 kinds of types. A correct understanding of the many factors that cause maize lodging 1.1 The reasons for the different varieties of corn varieties in the plant height, ear height, root development, stem thickness and mechanical strength, there are some differences, so lodging capacity is also different. The varieties prone to lodging include: Longdan 16, Hetian 20 and Mudanjiu etc. These varieties have been popularized in Heilongjiang Province. The yield is relatively high. Due to the long-term planting degeneration, the lodging is serious.