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本研究在高产田条件下,针对小麦‖大蒜(春甘蓝)/玉米‖蔓生菜豆(黄瓜或花椰菜)模式,设计1.5m、2.0m、2.5m、3.0m及3.5m五种带宽,采用大小畦播种,小畦宽均为0.7m,大畦宽分别为0.8m、1.3m、1.8m、2.3m及2.8m.小麦种植在大畦上,冬春菜与小麦间作种植在0.7m的小畦上.0.7m小畦上的冬春菜收获后,套种两行玉米,小麦收获后,在原小麦畦上种植秋菜(架菜豆、架黄瓜或花椰菜),与玉米形成间作.以小麦一玉米和相应单作蔬菜作对照.试验的主要结果是:(1)小麦随带型由窄变宽产量提高.带宽2.0m以上,小麦产量即可得到保证.(2)随带型由窄变宽,玉米产量逐渐下降.带宽在2.5m以下时,既有利于发挥玉米随宽行距加宽而单株产量提高的补偿效应,又能保证玉米有一定的占地面积,利于保证玉米产量.(3)随带型由窄变宽,间作冬春菜的产量下降.带型之间间作冬春菜的单株产量差异较小,产量高低,主要取决于占地面积.间作冬春菜产量较单作对照显著减产,是占地面积少和单株产量下降双重作用的结果.(4)间作秋菜随带型由窄变宽产量提高.间作秋菜产量低于单作.对空间生态位较高的架菜豆、架黄瓜而言,间作较单作减产,主要是占地面积少所致,间作的单株产量较单作不低或提高;而对空间生态位较低的花椰菜而言,间作产量较单作低,是由占地面积少和单株产?
In this study, we designed five bandwidths of 1.5m, 2.0m, 2.5m, 3.0m and 3.5m for the wheat ‖ garlic (spring cabbage) / corn ‖ lettuce (cucumber or cauliflower) Sowing, small 畦 width are 0.7m, big 畦 wide, respectively 0.8m, 1.3m, 1.8m, 2.3m and 2.8m. Wheat planted in the pomfret, winter and spring intercropping with wheat planted in the small 0.7m .0.7 After harvesting the winter and spring vegetables on m small mulberry, two rows of maize were interplanted. After harvesting the wheat, autumn vegetables (frame beans, frame cucumbers or cauliflower) were planted on the original wheat husks to form an intercropping with the corn. The main results of the experiment are as follows: (1) The yield of wheat is increased from narrow to broad, the yield of wheat is more than 2.0 m, and the yield of wheat can be guaranteed. (2) , It is not only beneficial to exert the compensatory effect that the yield of corn per plant increases with the widening of the row spacing, but also ensure the corn has a certain area, which will help to ensure the yield of corn. (3) The yield of spring vegetables decreased.Different types of yield between winter and spring vegetables were smaller and the yield was lower, Depends on the area.Induced winter wheat and spring vegetables yield is significantly reduced compared with the single-controlled, is the result of less land occupation and doubled yield per plant yield. (4) Is lower than single cropping.As for the frame niche and frame cucumber with higher niche of niche, the intercropping is less than the single cropping, which is mainly caused by the small occupied area, and the yield per plant is lower or higher than the single cropping; As for the low niche space cauliflower, the intercropping yield is lower than that of the single cropping system.