Effects on soil moisture under different planting densities with natural rainfall conditions in north-east of China | 东北地区自然降雨条件下种植密度对玉米田间水分的影响
2011
Sun Shijun, Shenyang Agricultural University, Shenyang(China), College of Water Resources | Yan Ying, Shenyang Agricultural University, Shenyang(China), College of Water Resources | Zhang Xudong, Shenyang Agricultural University, Shenyang(China), College of Water Resources
chinois. 摘 要：以沈阳地区为例,通过大田试验,对天然降雨条件下不同种植密度对土壤含水率的变化及其对玉米产量的影响进行了初步研究。结果表明,玉米生育期内土壤含水率的波动变化与降雨量和棵间蒸发密切相关。种植密度对土壤储水区的分布有一定影响,高密度时20～40cm土层水分变化最大,低密度下最小。依靠自然降雨,适宜种植密度为48000株/hm2,产量可达12 567.3 kg/hm2。
Afficher plus [+] Moins [-]anglais. By Shenyang area as an example,through the field experiment,the different planting densities of soil moisture content and its influence on maize yield under the condition of natural rainfall were studied.The results showed that maize growth period fluctuations of soil moisture evaporation and rainfall were closely related.Planting density on the distribution of soil water storage areas had a certain influence,the soil moisture changed the greatest during high-density 21-40 cm,and low density was minimum.On natural rainfall,planting density should be 48 000 plants/ha,yield was up to 12 567.3 kg/ha.
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