CAJ | 학술논문

为了探明密度对旱肥地冬小麦生育特性和产量的影响,在旱地高肥条件下,采用田间试验与室内分析相结合的方法,研究了种植密度对大穗型冬小麦品种(系)生育特性和产量的影响.结果表明:参试各品种(系)的苗高、株高随密度的增加而增高;而单株总分蘖数、次生根数、单株鲜质量、干质量等则随密度的增加而降低,而且各密度间的差异均达显著水平;其中中秆大穗型品种(系)的农艺性状表现不如高秆中穗型品种(CK);成穗数随密度的增加而增多,且各密度间差异显著;穗长、有效小穗数、穗粒数和千粒质量则随密度的增加而减少,各密度间的差异大小却不尽相同;产量随密度的增加呈现出先上升后下降的趋势,其中以基本苗315万/hm2的产量最高,其与基本苗420万/hm2时的产量无显著差异.可见密度对调节旱肥地小麦群体结构和产量作用明显.
위료탐명밀도대한비지동소맥생육특성화산량적영향,재한지고비조건하,채용전간시험여실내분석상결합적방법,연구료충식밀도대대수형동소맥품충(계)생육특성화산량적영향.결과표명:삼시각품충(계)적묘고、주고수밀도적증가이증고;이단주총분얼수、차생근수、단주선질량、간질량등칙수밀도적증가이강저,이차각밀도간적차이균체현저수평;기중중간대수형품충(계)적농예성상표현불여고간중수형품충(CK);성수수수밀도적증가이증다,차각밀도간차이현저;수장、유효소수수、수립수화천립질량칙수밀도적증가이감소,각밀도간적차이대소각불진상동;산량수밀도적증가정현출선상승후하강적추세,기중이기본묘315만/hm2적산량최고,기여기본묘420만/hm2시적산량무현저차이.가견밀도대조절한비지소맥군체결구화산량작용명현.
In order to verify the effect of planting density on growth characters and yield of winter wheat variety of big spike in dryland, under the condition of dryland and higher fertilizer level, the experiment was studied by field trail and indoor job. The results show that : the seedling height and the plant height of all the experimental varieties increases with the increasing planting density; on the contrary, the sum tillering number , secondary root number , fresh weight and dry weight of single-plant decreases with the increasing planting density, and the differences between planting densities are significant; the properties of agronomy of winter wheat variety of middle spike (CK)are better than that of winter wheat variety of big spike; the final spike number of all the experimental varieties increases with the increasing planting density, and the differences between planting densities are significant; at the same time, the spike length, the number of effective small spike, the grain number per spike and thousand grain weight decreases with the increasing planting density, and the differences between planting densities are respectively different; the yield trend of all the experimental varieties is increase, followed by decrease with the increasing planting density, and the maximum yield is gained when density is 315×104/hm2, and the difference of yield between 315×104/hm2 and 420×104/hm2 is not significant. Therefore, the effects of planting density on the group structure and yield of the wheat in dryland with higher fertility are significant.