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Through a multi-point soil temperature and humidity recorder, the relevant parameters of soil temperature and humidity were measured, and then some suggestions were made for the conditions required for crop planting:
Sweet Lai: When the soil depth is 6 cm deep and the minimum temperature between day and night reaches 4 to 5OC, the required water content is 80% of the maximum soil water holding capacity.
Sunflower: When the soil surface depth of 5 centimeters deep soil temperature for 8 to 4 days stable in 8 loOC, you can sow.
Maize: Usually when the temperature of the surface layer of the soil is 5 to 10 centimeters deep and stable at 6 to 12 OC, the soil moisture at the sowing depth should be 60 to 70% of the field water holding capacity, and it can be planted.
Sorghum: It is generally required that soil surface depth of 5 cm deep, stable at 10-12OC, soil relative humidity is 60-70% of field capacity, you can start sowing.
Millet. 5 cm depth of soil temperature reached 6-7OC daily, seven relative humidity was 65-75% of the field capacity began to sow.
Only by measuring the relevant parameters of the soil with a multi-point soil temperature and humidity recorder, can we ensure that the crops reach the most suitable conditions in the sowing period, so as to ensure the germination rate and the emergence rate, so as to ensure the growth and yield of the crops.
Application of Multi-point Soil Temperature and Humidity Recorder to Analysis of Crops' Early Sowing Soil Environment
The most basic link in agricultural production is timely planting, determining the appropriate sowing date, and it is of great significance to the growth and development of crops. The seeding period needs to be determined according to the soil temperature, humidity and subsequent characteristics. Because the temperature of the soil affects the speed of seed germination and also has an effect on emergence. The so-called timely early sowing in the process of agricultural planting is when the soil temperature reaches the conditions required for seed germination, and soil moisture is suitable for early sowing. For the control of soil temperature and humidity generally need to be determined through scientific and rigorous tests, the application of multi-point soil temperature and humidity recorder is bound to meet the requirements.