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Due to the large amount of rain in the early stage of the growth of flue-cured tobacco, the soil moisture measurement instrument was used to measure the soil moisture in this field from Wangwang. For the long-term soil layers of 10~20cm, 30~40cm, and 50~60cm in flue-cured tobacco, the average soil moisture content in the irrigation area was 9.49, 9.91, and 9.99% higher than that in the control area, respectively; the bud stage was 10.54, 10.96, and 11.04 percentage points higher respectively. The maturity period was 9.43, 9.85 and 9.93 percentage points, respectively. The precipitation from the survival of flue-cured tobacco to the regimental period was 402.0mm, the long-term precipitation was 108.5mm, the precipitation during budding period was 68.4mm, and the precipitation during mature period was 51.3mm. Due to the concentrated precipitation and large quantities of the trees, the Daejeon planting period is not treated with irrigation.
The plant height of the control period was always under the irrigation area. The growth rate of the two periods from the long-term to the budding period was quite, and the gap was significant after the bud period. The plant height during the bud treatment period was 1.06 times that of the control. , has been increased to 1.22 times the middle of maturity. This is mainly due to the fact that irrigation treatment provides sufficient moisture, which makes the growth of flue-cured tobacco faster.
Through measuring the soil moisture in each growth period of tobacco using the soil moisture measuring instrument, the results were compared with the growth and development of tobacco. The results can be summarized that the proportion of stem weight is greater than that of the control area in the irrigation area, long-term, budding The root and dry weight of the period is similar between the two areas. Except for mid-maturity, the proportion of root dry weight in the control area was greater than the irrigation area, and the other growth periods were the irrigation area larger than the control area. This shows that moisture has a significant effect on the accumulation of dry matter at each growth stage, especially on stems. However, flue-cured tobacco is a cash crop for the purpose of harvesting leaves. Therefore, the regulation of water has a very important significance.
Analysis of Relationship between Tobacco Quality and Soil Moisture by Soil Moisture Analyzer
The growth and development of tobacco need to have proper water in order to proceed normally. Excessive water or excessive water will affect the life activities of tobacco and even lead to the stagnation of tobacco growth. If the soil moisture is insufficient, it will have a great influence on the plant height, leaf thickness, and root development. Whether it is flood or drought, the appearance and quality of tobacco will vary. And induced secondary stress severely affected the metabolic activity of flue-cured tobacco, resulting in reduced yield and quality of flue-cured tobacco. To study the effects of irrigation treatment in different growth stages on the growth and development of flue-cured tobacco, and to provide a theoretical basis for moisture management in flue-cured tobacco production. Soil moisture content can generally be determined using a soil moisture meter.