论文部分内容阅读
通过试验研究了苏南丘陵地区以春玉米为主干作物的套作复合群体内作物时空配置问题。发现套作春玉米对播期、共生期和预留行宽度反应十分敏感，当春玉米与麦共生短于３０ ｄ 时，共生期对产量影响明显。秋季玉米和甘薯产量对与春玉米共生期的长短反应不明显，但套种于春玉米的大豆对播期反应较为强烈。扩大秋玉米行距对其间间作的甘薯产量有很大的促进作用。
The problem of space-time distribution of crops in the intercropping group with spring maize as the main crop in the hilly area of southern Jiangsu was studied. It was found that the spring maize was very sensitive to the sowing date, symbiosis period and reserve width. When the coexistence of spring maize and wheat was shorter than 30 d, the symbiotic period had a significant effect on the yield. The yield of autumn maize and sweet potato did not respond significantly to the symbiotic duration of spring maize, but the sowing date of spring maize had a stronger response to sowing date. Enlarging the row spacing of autumn maize can greatly promote the sweet potato yield.