2006•Ganhan diqu nongye yanjiuRequires access
Effect of soil moisture content in sowing and irrigation quota on maize emergence and growth in seedling period
Yuhong Hou, Liu Zuo
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Abstract
To seek for the effects of soil moisture content in sowing and irrigation quota on maize emergence and growth in seedling period,a series of pot experiments was conducted with the orthogonal regression design.The regression equations were established to describe the relationships between both plant height and total dry matter weight of maize and both soil moisture content in sowing and irrigation quota.The results showed that the emergence rates of maize were markedly affected by soil moisture content in sowing.The highest emergence rate of maize was achieved when the soil moisture contents in sowing were 20.6% on loam soil and 13.6% on sandy soil.The interaction between soil moisture in sowing and irrigation quota presented the acceleration and substitution effects in plant height and total dry matter weight.On loam soil,the soil moisture content in sowing for the highest plant height and dry matter weight was all 15.1%,and the optimal irrigation quota for those were 86.7 mm and 91.7 mm respectively;On sandy soil,the soil moisture content in sowing for the highest plant height and dry matter weight was all 12.0% and 13.0% respectively,and the optimal irrigation quota for those were all 76 mm.