田间微集雨种植方式及播种行距对小麦产量和水分利用效率的影响

Influence of planting pattern with rainwater harvesting and row spacing on yield and water use efficiency of wheat

  • 摘要: 为高效利用天然降水资源, 提高自然降水水分利用效率, 在山西临汾采用随机区组设计方法研究了田间微集雨种植方式及其播种行距对小麦产量及水分利用效率的影响。结果表明: 集雨产流带覆盖面积与种植带面积比例为1︰1.5和1︰1的种植方式平均产量均较对照(露地种植)显著增产, 1︰1.5、1︰1和露地种植的播种行距分别以11.3 cm、15 cm和15 cm具有较好的增产效应; 1︰1.5和1︰1种植方式在拔节期的个体生物学性状株高、单株分蘖和单株绿叶数优于露地栽培; 1︰1.5、1︰1和露地栽培的水分利用效率分别为19.8 kg·mm-1·hm-2、17.4 kg·mm-1·hm-2、14.3 kg·mm-1·hm-2。该项研究同时明确了不同田间微集雨种植方式在各生育时段的土壤水分变化动态特征。

     

    Abstract: In order to increase the use efficiency of natural precipitation resource, the effects of planting pattern with rainwater harvesting and row spacing on wheat yield and water use efficiency were analyzed in a random block design experiment in linfen, shanxi Province. The results show that average wheat yield of the planting patterns with 1︰1.5 and 1︰1 proportion of rainfall collection area to planted field area is significantly higher than that of open field cultivation (CK). When row spacings of 1︰1.5 and 1︰1 planting patterns, and open field cultivation are 11.3 cm, 15 cm and 15 cm respectively, yield increase is more significant. plant height, per-plant tiller number and per-plant green leaf number at the jointing stage under planting patterns of 1︰1.5 and 1︰1 are higher than that under open field cultivation. Water use efficiency in 1∶1.5, 1∶1 planting patterns and open field cultivation is 19.8 kg·mm-1·hm-2, 17.4 kg·mm-1·hm-2 and 14.3 kg·mm-1·hm-2 water for different planting patterns with rainwater harvesting at each growth stage are synchronously determined.

     

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