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In order to maintain higher emergence rate with direct seeding in Shandong rocky mountain, effects of different covering ways on emergence rate of Sophora japonica L. direct seeding were studied. The results showed that both mulching film and grass cover could effectively increase the moisture content of the soil at the depth of 0-30 cm, contributing to soil moisture conservation and the inhibition of soil evaporation, which created favorable moisture environment for the growth of S. japonica seeds. Both the emergence rate and the seedling height under mulching film had greater improvement and partly enhanced by 26.65% and 6.85 cm respectively, and mulching film also helped S. japonica seeds emerge and ensured the seedling growth. The emergence rate and the seedling height under grass cover had been also raised in some degree, but they were much worse than those under mulching film. The emergence rate and the seedling height under block cover were not significantly increased. So when sowing S. japonica seeds in the spring, mulching film is the best covering way.
In order to maintain higher emergence rate with direct seeding in Shandong rocky mountain, effects of different covering ways on emergence rate of Sophora japonica L. direct seeding were studied. The results showed both both mulching film and grass cover could effectively increase the moisture content of the soil at the depth of 0-30 cm, contributing to soil moisture conservation and the inhibition of soil evaporation, which created favorable moisture environment for the growth of S. japonica seeds. Both the emergence rate and the seedling height under mulching film had greater improvement and partly enhanced by 26.65% and 6.85 cm respectively, and mulching film also helped S. japonica seeds emerge and ensured the seedling growth. The emergence rate and the seedling height under grass cover had been also raised in some degree, but they were much worse than those under mulching film. The emergence rate and the seedling height under block cover were not significantly increased. So when s owing S. japonica seeds in the spring, mulching film is the best covering way.