论文部分内容阅读
【目的】以高产、优质、抗逆性强、适应性广的新玉13号粮饲兼用玉米(原代号CX431)为试验材料,分析密度对其生长发育与产量的影响,为天山南坡牧区种植粮饲兼用玉米提供最佳种植密度。【方法】采用4种种植密度进行随机区组设计,利用Excel和DPS统计分析软件,对不同种植密度下的玉米产量和产量构成因素进行数据分析。【结果】种植密度对新玉13号粮饲兼用玉米生长发育和产量及其构成因素的影响很大;随着种植密度的增加,株高、茎粗、穗长、穗粗和双穗率减少,穗数、鲜、干重和穗粒重逐渐增加,而穗行数和行粒数不受密度影响;产量随密度增加而提高,密度达到一定程度之后,随着密度的增加,反而下降。【结论】在天山南坡牧区拜城县种羊场粮饲兼用玉米种植密度以6.75×104~7.50×104株/hm2为宜。
【Objective】 The objective of this study was to study the effect of density on the growth and yield of Xinyu No.13 grain-for-food and corn (original code CX431) with high yield, good quality and strong adaptability, Planting grain and grain corn to provide the best planting density. 【Method】 Randomized block design was conducted using four planting densities. The data of maize yield and yield components under different planting densities were analyzed by Excel and DPS statistical analysis software. 【Result】 The results showed that planting density had great influence on the growth, yield and composition of the new corn-grain variety Xiyu No.13. With the increase of planting density, the plant height, stem diameter, ear length, ear diameter and ear percentage decreased , Spike number, fresh weight, dry weight and spike weight increased gradually. However, the number of spike rows and grain number per row were not affected by the density. The yield increased with the increase of density. After the density reached a certain level, the density decreased but declined. 【Conclusion】 The planting density of maize in the pasture of Baicheng County in the pastoral area of southern Tianshan Mountains is 6.75 × 104 ~ 7.50 × 104 plants / hm2.