The test site is located in Binhu Township, Changji City. The tested cotton variety, Battery No. 1, has an effective accumulated temperature of 3374e, an average annual precipitation of 190mm, a maximum precipitation of 280mm, a minimum precipitation of 150mm, an average annual evaporation of 1756mm, and a frost-free period of 160d. The test soil was irrigation and siltation soil, located at the south edge of the alluvial fan, with an elevation of 800m, a ground slope of 0104b, and an area of ​​13313hmz (2000 acres). The physical and chemical properties of the soil were: soil thickness 20an, bulk density 1144g/}n'3, organic matter 1126%, total nitrogen 01054%, alkaline hydrolysis nitrogen 6318mg/kg, available phosphorus 516mg/kg, available potassium 152mg/kg, pII815; soil thickness When 30an, the bulk density is 41g/anz, and when the soil thickness is 50an, the bulk density is 1138g/an'3.
Using a soil moisture monitor to measure 0}20}n, 20}50an, 50}100an soils, under normal conditions, measured at 15d1, rainfall above 5mm, measured before and after irrigation, measured at growth period, observation of growth period Record. Pressurized drip irrigation is more efficient than conventional in the utilization of water, and the economic benefits are good. This is due to: (1> pressure drip under the membrane, uniform irrigation, uniform growth of the whole crop, which lays the foundation for increasing yield; (2) submerged membrane drip irrigation replaces the traditional gully irrigation method, and sowing rate and number of mu. Increased utilization of land has improved the foundation for increasing yield; (3) The supply of water and fertilizer under drip irrigation through the drip irrigation system to crops, inhibits the growth of weeds between the membranes, and the weeds under the membrane are exposed to high temperatures. And lack of support can not grow, create better conditions of water and fertilizer for the crops, promote the growth of the crops, increase production; (4) The membrane under pressure drip irrigation can overcome due to poor land formation and difficult irrigation, and uneven irrigation Disadvantages.Additional membrane drip irrigation also creates good conditions for field management of crops such as cultivators, fertilization, and pesticide application, making it easier to implement mechanization operations, which liberates people from heavy manual labor.
After monitoring and comparing the soil moisture of two plots by the soil moisture monitor, it can be found that compared with the conventional drip irrigation, the pressure drip irrigation under the membrane has a significant increase in the utilization rate of water. Both the economic benefits and the net income benefits are A very clear improvement. Therefore, it is very important that the measures for drip irrigation under agricultural irrigation in the water-saving agriculture. Due to differences in soil, climate, varieties of tested crops, and field management levels, test data and conclusions need to be further improved.
Sodium Formate is also called sodium formate. The crystal contains two crystal waters, so it is also called sodium formate dihydrate, sodium formate dihydrate, sodium formate dihydrate. Sodium formate is one of the simplest organic carboxylates. It is white crystals or powder with a slight Formic Acid odor. Slightly deliquescent and hygroscopic. Soluble in about 1.3 parts of water and glycerin, slightly soluble in ethanol and octanol, insoluble in ether. Its aqueous solution is alkaline. When heated, sodium formate decomposes into hydrogen and sodium oxalate, and then generates sodium carbonate. Sodium formate is mainly used in the production of insurance powder, oxalic acid and Formic ACID. In the leather industry, it is used as a camouflage acid in the chrome tanning process, used as a catalyst and a stable synthetic agent, and a reducing agent in the printing and dyeing industry. Sodium formate is harmless to the human body and has irritating effects on eyes, respiratory system and skin.
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