Crops ›› 2018, Vol. 34 ›› Issue (4): 121-125.doi: 10.16035/j.issn.1001-7283.2018.04.020

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Effects of Spraying Foliar Fertilizers on Dryland Wheat Growth and the Correlation with Yield Formation

Lu Mei,Sun Min,Ren Aixia,Lei Miaomiao,Xue Lingzhu,Gao Zhiqiang   

  1. College of Agriculture, Shanxi Agricultural University, Taigu 030801, Shanxi, China
  • Received:2018-01-22 Revised:2018-05-08 Online:2018-08-20 Published:2018-08-23

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Abstract:

To explore the impacts of spraying foliar fertilizer in different stages on dryland wheat growth and their correlation with yield, an experiment was carried out in Wenxi County, Shanxi Province from 2014 to 2015. The impact in the stages of single applying or spraying foliar fertilizer in different stages (D1-D11 and CK) was studied. The results showed that compared with CK, spraying Duntianbao or KH2PO4 (D1-D11) both increased wheat leaf area index, tillers and secondary roots. D6 significantly improved ear number and grain yield, and spraying Duntianbao (D1-D7) was higher than spraying KH2PO4 (D8-D11), and D7 was the best, but there was no difference with D6. The effects of spraying foliar fertilizer on grain number per ear and 1000-grain weight was irregular. Correlation analysis showed that no matter how to spraying foliar fertilizer, the correlation of leaf area index at flowering stage and ear number, 1000-grain weight, yield were significantly positive. There were a positive correlations between secondary roots at flowering stage and ear number and yield. In conclusion, spraying Duntianbao at jointing and booting stages were conducive to promoting dryland wheat growth of root and leaf, prolonging functional leaf time, increasing tillers, delaying root senescence, increasing ear number and 1000-grain weight, and thereby improving yield.

Key words: Dryland wheat, Foliar fertilizer, Grow and development, Yield and its composition

Fig.1

Effects of spraying foliar fertilizer on yield and its components of dryland wheat"

Fig.2

Effects of spraying foliar fertilizer on agronomic traits of dryland wheat||| Different letters indicate significant difference (P<0.05), the same below"

Table 1

Correlation analysis of agronomic traits and yield and its components of dryland wheat under spraying foliar fertilizer"

指标Index 开花期叶面积指数
Leaf area index at anthesis stage		 开花期穗数
Spike number at anthesis stage		 次生根数Secondary root number
开花期Anthesis 成熟期Maturity
穗数Spike number 0.9799** 0.8699** 0.6815* 0.7681**
穗粒数Spike grain number -0.0635 0.2689 0.1274 -0.2129
千粒重1000-grain weight 0.6094** 0.5658* 0.0679 0.1235
产量Yield 0.8832** 0.8336** 0.5532* 0.5185

Table 2

Correlation analysis of yield and its components under spraying foliar fertilizer"

指标Index 穗数
Spike number		 穗粒数
Grain number per spike		 千粒重
1000-grain weight		 产量
Yield
穗数Spike number 1.0000** - - -
穗粒数Grain number per spike 0.0563 1.0000** - -
千粒重1000-grain weight 0.6678* 0.3469 1.0000** -
产量Yield 0.9332** 0.1466 0.8108** 1.0000**
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