带状种植小麦带型—群体—产量相关规律的研究

本研究在高产田条件下， 选用中穗型冬小麦品种泰876161， 在留有70 cm间套行条件下， 研究了带状种植小麦的带型—群体—产量相关规律。 主要结果是： (1) 带状小麦同常规方式， 在精量播种下获得高产。 大播量、 大群体栽培减产。 (2) 带状小麦实播面积下降， 最优群体产量较常规方式最优产量减产。 带型愈窄， 实播面积愈

Studies on Correlation of Strip Type, Population and Yield in Wheat

On a fertile land, a winter wheat cultivar with medium spike size Tai 876161 was chosen, strip planting wheat with a 70 cm uncropped space and different cropping covered width was designed and the correlation of strip type seed rate yield was studied. The main results are as follows: (1) The high yield of strip planting wheat just as the conventional planting pattern is based on the technique of smaller seed rate and intensive cultivation and the large seed rate cultivation leads to yield drop. (2) Due to less coverage, the peak yields of strip wheat are lower than that of the conventional pattern, and the narrower the strip, the smaller the coverage, thus the bigger drop the yield. However, strip wheat has a higher land utilization ratio. (3) The yield per 667 m 2(y) would increase with the strip width getting wider, and the correlation between strip width(x) yield(y) could be fitted with a reeiprocal equation y =a x b. (4) The border single row yield of strip wheat differs slightly with various strip types and seed rates. Yet the inner single row yield(y)decreases as the strip width(x)getting wider, mainly due to the single row spike number drop, and the correlation could be fitted with y =a x b. The yield of inner row decreases markedly under high seed rate cultivation. (5) Not only the edge superiority of strip wheat could make up the yield loss, but the inner rows also have a yield compensation effect.