【摘要】 为明确种植方式与土壤水分含量、高粱生长发育、产量及产量构成因素的关系,以高粱杂交种‘通杂139’为试验材料,研究了大田条件下种植方式对土壤含水量、高粱生长、产量及其构成因素的影响。采用随机区组设计,3次重复。试验设3个处理方式,分别为B1—等行距50 cm(种植密度10.5万株/hm~2)、B2—二比空1(行距50 cm种2行空1行,种植密度10.5万株/hm~2)和B3—二比空2(行距50 cm种2行空2行,种植密度7.0万株/hm~2)。结果表明:等行距种植方式平均株高最高,二比空2种植方式平均茎粗最大,且各处理差异显著。二比空1种植方式可显著提高0～40 cm垄上土壤含水量,提高整个生育期内土壤平均含水量,显著增加叶面积指数和显著提升籽粒产量。本研究结论:‘通杂139’种植方式为种2行空1行,种植密度10.5万株/hm~2,株距10.58 cm×50 cm时,能更好地协调群体结构,使籽粒产量达到较高水平。更多还原

【Abstract】 To clarify the relationships between planting pattern and soil water content, growth anddevelopment, yield and its component factors of sorghum, an experiment with sorghum variety‘Tongza 139’wasconducted under field conditions. We adopted the randomized complete block with 3 replications, and employed3 planting patterns, including B1(equal row spacing 50 cm and planting density 105 thousand plants/hm~2), B2(row spacing 50 cm and planting 2 rows with 1 row empty and planting density 105 thousand plants/hm~2), B3(rowspacing 50 cm and planting 2 rows with 2 rows empty and planting density 70 thousand plants/hm~2). The resultsshowed that: the average plant height of B1 was the highest, the average plant stem diameter of B3 was thelargest and there were significant differences among the treatments; the planting pattern of B2 couldsignificantly increase soil water content in rows of 0-40 cm, increase the average soil water content during thewhole growth period, significantly increase the leaf area index and the grain yield. The study shows that theplanting pattern B2 of‘Tongza 139’(planting density of 105 thousand plants/hm~2, plant spacing of 10.58 cm×50 cm) can well coordinate the group structure and raise the grain yield to a high level.更多还原