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The so-called timely sowing, that is, the local soil temperature reaches the minimum temperature required for seed germination, on the right soil moisture conditions, that is timely timely sowing, to ensure the crop yield and quality, multi-point soil temperature and humidity recorder determination of soil-related parameters is necessary. Here are the requirements for the temperature and humidity of the soil for appropriate sowing of several crops.
Millet. 5 cm depth of soil temperature reached 6-7OC daily, seven relative humidity was 65-75% of the field capacity began to sow.
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.
To the Japanese code: When the soil surface depth of 5 cm deep soil temperature for 8 to 4 days stable at 8 a 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.
Separation: Generally, it is required that the surface temperature of the soil surface is 5 cm deep, stabilized at 10-12OC, and when the soil relative humidity is 60-70% of the field water capacity, the planting can begin.
Application of Multi-point Soil Temperature and Humidity Recorder in Timely Early Sowing
Timely sowing in agricultural production is the most basic and very important link. To determine a suitable sowing date, it is necessary to use the soil moisture. Temperature, etc. determine that the soil temperature affects the speed of seed germination, and even the length of emergence. In general, seed germination has a certain range of soil temperature requirements. The higher the temperature, the faster the germination and the shorter the time required. On the contrary, the slower the germination, the longer it takes. For the determination of soil temperature and humidity can use more soil temperature and humidity recorder for analysis and determination.