不同行距对冬小麦产量及构成因素的影响

为了寻求高产小麦所需的最佳播种方式和行距，实现冬小麦高产和稳产。2011—2013年在河北省藁城市进行了不同播种方式对小麦产量影响的大田试验。试验处理包括冬小麦三密一稀(A)、四密一稀(B)和六密一稀(C)三种种植方式，其中三密一稀(A)种植方式为目前生产上大面积采用的种植方式，三种种植方式的平均行距分别为17.6 cm、15.0 cm和11.7 cm。2年的试验结果表明，冬小麦四密一稀(B)种植产量最高，其次为六密一稀，三密一稀产量最低，四密一稀和六密一稀种植的冬小麦产量分别比三密一稀种植的产量2年平均提高12.2%和9.0%(P＜0.05)。四密一稀(B)处理与三密一稀(A)处理相比具有增产效应，与六密一稀(C)处理相比农业生产中的可操作性强。因此，建议生产上可大面积推广小麦四密一稀的播种方式。7).。

Effects of Row Spacing on the Yield and Yield Components of Winter Wheat in Hebei

For the purpose of optimizing the sowing pattern and row spacing of winter wheat to achieve high andstable yield, a field study was conducted at Gaocheng City in Hebei Province during 2011-2013. Threetreatments were set up： three narrow row spacing followed by one wide row spacing（A）, four narrow row spacingfollowed by one wide row spacing（B） and six narrow row spacing followed by one wide row spacing（C）. Theaverage row spacing of treatments A, B and C were 17.6 cm, 15.0 cm and 11.7 cm, respectively. The resultsfrom the two years＇ experiment showed that the yield order of the three treatments was treatment B treatment C treatment A. The average yield of the two years under treatment B was 12.2%, greater than thatof A, and the yield of treatment C was 9.0% greater than that of A（P0.05）. The results also showed thatcompared with treatment A, treatment B had the potential to increase winter wheat yield, while compared withtreatment C, treatment B had the advantage of high operability in practice. Therefore, it was recommended thatthefour narrow spacing followed by one widespacingpracticecouldbeusedwidely inthis region.