四川盆地稻茬麦垄作栽培技术研究初探

垄作(Raised-Bed planting)已成功应用于水浇地小麦生产,但稻茬麦垄作栽培技术研究还是空白。2003~2005年,在四川省双流县和广汉市先后进行了稻茬麦垄作与平作的比较试验和垄作适宜品种筛选试验。结果表明:①以1 m开厢作垄、垄面宽75cm、垄上种植3行小麦的情况下,垄作因群体起点低、有效穗数不足导致单产显著低于平作栽培;当增加垄上种植行数,提高基本苗之后,垄作与平作小麦的单产没有显著差异。②垄作有利于小麦个体发育,其单株干重、单株绿色叶面积均显著高于平作小麦,但群体干物质积累量和LAI略低于平作。③不同品种类型对垄作的反应不一样。分蘖力强、干物质积累量大、抗倒性好的大穗型品种在垄作条件下更具优势。

Preliminary study on raised-bed planting for common wheat after rice in Sichuan basin

Raised-bed planting(RBP) has been used successfully for irrigated wheat but not for wheat after rice so far.In 2003-2005,three experiments involving in planting pattern and cultivar type of wheat were conducted in Shuangliu county and Guanghan city respectively in Sichuan basin of China.The results showed that:(i) The grain yield by RBP was significantly lower than that by Flat-planting(FP) when plant density was poor but the difference in grain yield between these two planting patterns disappeared when basic densities were same.(ii) RBP benefited the development of individual plant of wheat and increased above ground dry weight and green leaf area per plant.But the group dry weight and leaf area index(LAI) by RBP lower than those by FP slightly.(iii) The yield potential in RBP varied with the tested cultivar types of wheat.The cultivars being good tillering,logging-resistance and great capability in dry matter production were more suitable for RBP than others.