In the soybean seedling stage and grain-drilling period, when the temperature is stable, the soil temperature is selected to measure the soil temperature. During the observation, the curved pipe temperature meter is buried between the soybean rows, and the ground temperature at the soil layer is measured for 24 h, and the observations are taken every 2 h i times, and the average value is 3 a. value. Before soil sowing, key growth period and harvesting, the soil water content of 0 200 cm soil was measured with an earth-boring tester. The soil moisture was measured every 20 cm and determined by the dry method. The soil density was measured using a ring knife method. The water consumption of soybeans was calculated using the farmland water balance method. Water use efficiency (WUE) is calculated as the level of production. Soil moisture temperature tester plays an important role in the determination of soil moisture temperature.
Under different planting patterns, the total water consumption and the average water consumption intensity in the whole growth period of soybean showed the same trend in different years, with open sowing> open field furrowing> film-covered sowing> covered film furrow sowing. In dry years, water consumption in different planting patterns and its consumption by different growth stages were shown little early, middle and more, the latter a relatively small change in trend in the flat water Year (2010) showed a little early, late and more The trend of change. It shows that the water consumption and water intensity in soybean fields are affected by the growth period, planting patterns and precipitation conditions.
Different types of treatment. Soil Moisture Content in 0 ~ 2m Soil with Dynamic Change of Soybean Growth Period. In dry years, the soil moisture content decreased gradually from sowing to flowering; after the flowering stage, the soil moisture showed a clear upward trend; the soil moisture content of soybean maturity was lower than the sowing date. In plain water years, the change of soil water content was relatively small during the period from sowing to flowering of soybean, and the water content of soil after flowering showed a tendency of rapid increase. The soil water content in soybean maturity stage was significantly higher than that in the sowing stage. In dry years show that consumption of soybean growth depends on moisture during rainfall before sowing soil moisture and fertility, and flat water Year soybean growth depends on the growth stage of precipitation, precipitation during the growing period to meet the growing demand for soybean moisture.
Whether or flat water year drought years, in different years under the same conditions before sowing soil moisture, between different planting patterns, soil moisture content was different growth stages of soybean sowing in a film ditch highest, followed by coating flat sowing, sowing exposed trench , the lowest in the field. It shows that the film can reduce the evaporation of soil moisture, and has a significant effect on the conservation of soil moisture. Grown planting can effectively collect natural precipitation, and the combination of plastic film mulching and traditional furrow planting is an effective measure to increase soil water content in the field.
Through the measurement of the soil moisture temperature tester, it was also found that the cover film can adjust the temperature of the soil tillage layer. In the soybean seedling stage, the temperature of the plough layer in the film-mulching sowing was increased by 3.3°C; in the soybean bulge, the temperature of the plough layer in the film-mulching sowing was decreased by 0.10C; in the whole growing period, the film was covered. The average soil temperature of the ploughed plough layer was 1.60C04 higher than that of the open land sowing. Under the cultivating methods, the water consumption and water intensity in the field were the lowest, and the highest in the field. The film-covered furrow planting significantly improved soil moisture conditions, significantly improved soybean yield and water use efficiency, and enabled efficient use of precipitation resources.
Under different planting patterns, the total water consumption and the average water consumption intensity in the whole growth period of soybean showed the same trend in different years, with open sowing> open field furrowing> film-covered sowing> covered film furrow sowing. In dry years, water consumption in different planting patterns and its consumption by different growth stages were shown little early, middle and more, the latter a relatively small change in trend in the flat water Year (2010) showed a little early, late and more The trend of change. It shows that the water consumption and water intensity in soybean fields are affected by the growth period, planting patterns and precipitation conditions.
Different types of treatment. Soil Moisture Content in 0 ~ 2m Soil with Dynamic Change of Soybean Growth Period. In dry years, the soil moisture content decreased gradually from sowing to flowering; after the flowering stage, the soil moisture showed a clear upward trend; the soil moisture content of soybean maturity was lower than the sowing date. In plain water years, the change of soil water content was relatively small during the period from sowing to flowering of soybean, and the water content of soil after flowering showed a tendency of rapid increase. The soil water content in soybean maturity stage was significantly higher than that in the sowing stage. In dry years show that consumption of soybean growth depends on moisture during rainfall before sowing soil moisture and fertility, and flat water Year soybean growth depends on the growth stage of precipitation, precipitation during the growing period to meet the growing demand for soybean moisture.
Whether or flat water year drought years, in different years under the same conditions before sowing soil moisture, between different planting patterns, soil moisture content was different growth stages of soybean sowing in a film ditch highest, followed by coating flat sowing, sowing exposed trench , the lowest in the field. It shows that the film can reduce the evaporation of soil moisture, and has a significant effect on the conservation of soil moisture. Grown planting can effectively collect natural precipitation, and the combination of plastic film mulching and traditional furrow planting is an effective measure to increase soil water content in the field.
Through the measurement of the soil moisture temperature tester, it was also found that the cover film can adjust the temperature of the soil tillage layer. In the soybean seedling stage, the temperature of the plough layer in the film-mulching sowing was increased by 3.3°C; in the soybean bulge, the temperature of the plough layer in the film-mulching sowing was decreased by 0.10C; in the whole growing period, the film was covered. The average soil temperature of the ploughed plough layer was 1.60C04 higher than that of the open land sowing. Under the cultivating methods, the water consumption and water intensity in the field were the lowest, and the highest in the field. The film-covered furrow planting significantly improved soil moisture conditions, significantly improved soybean yield and water use efficiency, and enabled efficient use of precipitation resources.
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