Effect of Shallow Tillage on Soil Water and Nutrient Content

Effect of Shallow Tillage on Soil Water and Nutrient Content

Shallow regrowth of grass is mainly aimed at the prevention and control of weeds in agricultural fields in arid areas and prevention of soil moisture loss. Shallow cultivating to accept autumn rain and control farmland weeds, traditional cultivation is conducted every year in autumn and deep so that the deep ploughing and transpiration of the dry agricultural areas evaporates too quickly, and the winter and spring rainfall decreases. The result is how deep the tillage is and how deep the dry soil layer is. , causing a serious shortage of soil moisture, spring sowing drought and water, affecting sowing and emergence. There have been relatively few studies on soil moisture and nutrients in shallow ploughing. However, in recent years, the state’s attention to agriculture has risen linearly, and it has indirectly begun to further understand shallow ploughing.

The determination of soil moisture content requires the use of scientific instruments such as the GPS Soil Moisture Analyzer. The greatest feature of this instrument is the ability to display the latitude and longitude information of the current point while measuring the soil moisture, which is conducive to the space of the soil. Differentiated comparisons. Soil moisture thermometers, portable soil moisture temperature and velocity measuring instruments and other instruments are also commonly used in ordinary agricultural research. The two major characteristics of these two instruments are the ability to measure soil moisture and soil temperature. Soil moisture thermometers are used to study soil moisture. With the synergy of soil temperature, it is very convenient. Soil nutrients are determined mainly by means of a soil tester, which can determine a variety of nutrient contents such as total nitrogen, total phosphorus, available nitrogen, and available phosphorus, and is a widely used and more accurate measurement result. instrument.

According to the relevant research data, the shallow ploughed soil moisture mainly accumulated in the 5-20 cm plough layer, and the 20-25 cm soil layer contained less water. This is mainly due to the shallow ploughing of the deep soil, which has already formed a distinct plough base. The increase in water storage below 20 cm in deep plowing may be due to deep plowing destroying the bottom layer of the plow and causing more water leakage. Due to shallow ploughing, the nutrient contents of nitrogen, phosphorus, and potassium in the plough layer increased with depth as the depth of the soil did not change. Deep ploughing increased the tillage layer, and the nutrient content of nitrogen, phosphorus, and potassium in the plough layer decreased with depth. . . Different tillage patterns analysis showed that the total potassium content in total nitrogen and 0-10 and 10-20 cm tillage layers in shallow ploughed 0-10 cm soil layer was slightly lower than 0.0417 g/kg and 0.0853 g/kg, 0.0162 g The content of total nitrogen and 20-30 cm total potassium in plough layer of 10-20 and 20-30 cm were slightly increased by 0.0022 g/kg, 0.0143 g/kg and 0.0081 g/kg, respectively, between the same plough layers in deep plowing, and the total phosphorus content was shallow. Deeper tillage treatments all had different degrees of increase, but there were no significant differences in N, P and K nutrient contents among different tillage layers.

Heat Surface

Membrane/Water Wall Material and Arrangement:
The furnace and roof are made up of membrane water wall and hung on the steel structure by upper hanging suspender of water cooling upper header. Furnace intersecting surface is 3170×5290mm² and the elevation of top furnace is 28877mm. The membrane water wall is made up of φ60×5 and 6×45 welding steel flat. The combustion chamber is made of φ60×4 steel tube and welded with pin to fasten refractory material. The upper part of combustion chamber connects with furnace membrane water wall. The lower part connects with water cooling wind chamber and water cooling air distributor. The water cooling wind chamber is made up of φ60 steel tube and welded with pins to fasten the refractory material. The water cooling distributor is welded with φ60 steel tube and 6X45 steel flat. The small holes on the steel flat connects with the funnel cap.
The furnace divides left, right, front and back water circulation circuit. The steam leading tube is made up of φ133×5 and φ108×4.5 steel tube. The downcomer is made up of φ108×4.5 steel tube. Install the blowdown valve under the lower header to periodic blow down.

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