| Experimental study on parameters of maize fluid hill-drop seeding |
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| DOI：10.7606/j.issn.1000-7601.2016.01.24 |
| Key Words: maize fluid hill-drop seeding gel application rate soil moisture content emergence rate |
| Author Name | Affiliation | | XIN Ming-jin | College of Engineering, Shenyang Agricultural University,Shenyang, Liaoning 110866, China | | LIU Lan-xin | College of Engineering, Shenyang Agricultural University,Shenyang, Liaoning 110866, China | | SONG Yu-qiu | College of Engineering, Shenyang Agricultural University,Shenyang, Liaoning 110866, China | | KONG Ai-ju | College of Engineering, Shenyang Agricultural University,Shenyang, Liaoning 110866, China | | REN Wen-tao | College of Engineering, Shenyang Agricultural University,Shenyang, Liaoning 110866, China | | FANG Fei | College of Engineering, Shenyang Agricultural University,Shenyang, Liaoning 110866, China |
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| Abstract: |
| Fluid drilling is an effective way to save water against drought, ensure emergence, growth and yield of crops in arid and semi-arid areas. Quadrate orthogonal rotary regression experiment was carried out to explore suitable sowing condition parameters for maize fluid hill-drop sowing based on the effects of soil moisture content, soaking time of seeds and application rate of gel on emergence rate of maize. The gel tested was a mixture of water and super absorbent polymer of 0.15% in concentration and “Dongdan 60” maize seed, and the soil used was light brown soil taken from Qipanshan area of Shenyang City. The results showed that the soil moisture content and application rate of gel had significant effects on emergence, and the more they were, the higher the emergence rate became, though there was no linear relationship. The influence on emergence became decreased at high moisture content and application rate, indicating that excessive soil moisture content was unfavourable for emergence. The optimal soil moisture content, concentration of gel and gel application rate were 7.12%, 0.15% and 5.6 m3·hm-2, respectively. The seed soaking time did not have significant effect on emergence rate, but the seeds would germernate early when the seeds absorbed enough moisture during soaking. The mathematic model of gel application rate to soil moisture content was established. To ensure emergence rate through the use of this moedel, the rate could be adjusted accordlingly to a certain soil moisture content. |
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