On the Soil Temperature and Moisture Controls by Field Irrigation II. : Studies on the Control and Improvement of Microclimate in the Farm Fields (2).

摘要

We have made a experiment on field irrigation by tobacco plant after the experiment of previous year and have got following results. (1) Design of our field experiment, was shown in Figure 1 and table 1 in the text, (2) Figure 2 shows a daily course of soil moisture content by each plot which evaluate the effect of moisture control by irrigation. (3) Length of stems of to bacco plants with their shapes of leaves were different by plots as well as soil moisture content as in figure 2 above mentioned. (4) We could also recognized the effect of environmental control by field irrigation in our experiment of this year.