本文建立了玉米茎秆的力学模型。
适当降低株高，推迟吐丝日期，增加穗位叶面积有利于提高玉米茎秆含糖量。
Appropriately reducing plant height, extending silking date and increasing ear leaf area might be useful in improvement of stalk sugar content.
本文介绍了一种新型玉米茎秆粉碎破茬机，对其工作原理和整机结构进行了阐述和说明。
A new chopper of corn straw and stubble was introduced in this paper? The structure and working principles of the new chopper of corn straw and stubble is expatiated and explained.
建立了玉米茎秆的力学模型，利用力学理论和方法，给出了玉米茎秆临界力的具体表达式。
A dynamic model for maize stem is established, a formula about critical force of maize stem is extracted by using dynamic theory and method.
玉米的茎秆和叶子都是粗饲料。
玉米持绿性提高，使收获时茎秆、叶片中的含水量提高，但不会引起籽粒含水量的提高。
The improvement of stay-green can increase stem and leaf water content, but can't increase kernel water content.
提高青贮玉米饲料品质非常重要，较高的茎秆含糖量有助于进一步提高青贮玉米的饲料品质和适口性。
The quality of silage corn improvement is necessary. High sugar content of stalk will help for further improving the quality of corn silage and palatability of feed.
CMS玉米氮素积累总量高于其同型可育系（P<0.05），成熟期氮素在茎秆和籽粒中分配较多；
Total nitrogen accumulation amount of CMS lines was distinctly higher than their homotypic lines (P<0.05), with more nitrogen distributed to stalk and grain in CMS lines.
糯玉米在抽雄期前，氮素主要集中在叶片，分配率达45.16%，茎秆中的分配率次之，为33.16%； 叶鞘中再次，为11.01%，三营养体共计占89.33%。
Before tassel emerge, the nitrogen amount was mainly distributed in leaves and followed by stem and sheath with 45.16, 33.16 and 11.01%, totally 89.33%, respectively.
糯玉米在抽雄期前，氮素主要集中在叶片，分配率达45.16%，茎秆中的分配率次之，为33.16%； 叶鞘中再次，为11.01%，三营养体共计占89.33%。
Before tassel emerge, the nitrogen amount was mainly distributed in leaves and followed by stem and sheath with 45.16, 33.16 and 11.01%, totally 89.33%, respectively.
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