A construction method of sandy yam irrigation mode

Abstract

The invention relates to a method for constructing a yam irrigation mode in sandy land, including yam cultivation investigation, yam ditch irrigation section mode function design, and yam ditch irrigation section optimization. Among them, the work process of yam cultivation technology investigation is the determination of cultivation season, site selection and fertilization, fertilizer and water management, erection and pruning and harvesting; yam ditch irrigation section mode function design According to the geometric programming method, the objective function model is constructed to increase the income, and the construction suitable for sandy land is constructed. The objective function of the geometric planning of furrow irrigation of Chinese yam is solved according to the corresponding constraints. Experiments have proved that the invention has strong functionality, simple, effective, low-cost technology, and significant benefits of increasing income and reducing disasters, and can be widely used in sandy yam planting areas.

Description

technical field [0001] The invention relates to the technical field of agricultural economic crop planting and irrigation, in particular to a construction method of a sandy yam irrigation mode. Background technique [0002] The requirements of yam for the growth environment are not too harsh, and the adaptability is strong. Yam likes warm temperature and can tolerate cold. But planting yam can not be waterlogged or drought, can not be waterlogged. The above-ground stems and leaves of Chinese yam are warm and afraid of frost, and the more suitable cultivation temperature is 25 to 28 degrees Celsius; the suitable temperature for tuber germination is about 15 degrees Celsius, and at 20 to 24 degrees Celsius, the tuber grows the most. Rapidly, but when the temperature is below twenty degrees Celsius, the growth of tubers is hindered. The growth of tubers requires sufficient sunlight, which is suitable for tubers to accumulate nutrients. Planting yam is suitable for sunny, fl...

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Problems solved by technology

Generally, the yield of yam is higher in the sandy soil growth environment, because planting yam requires deep trenches, and the sandy soil has a loose soil structure and poor water and fertilizer retention performance. If the yam ditch collapses, the yield of yam will drop sharply; in addition, if the irrigation mode and irrigation volume are not controlled during the water shortage season during the yam growth period, the yam ridges will easily sink, resulting in the failure of yam planting

For a long time, in the process of farmers planting yam, the cross-section is generally in the form of furrows and ridges, but the optimal design size and pattern of furrows and ridges need to realize the optimal design of the cross-section according to the growth habits of yams; in addition, the traditional irrigation of yams is Flood irrigation, or "horse race water" in the yam ditch can easily lead to ditch collapse and production reduction of yam, and precipitation in the flood season cannot be eliminated in time, which will also lead to collapse of ditch and production reduction, although there are currently some efficient water-saving irrigation models, such as Sprinkler irrigation, pipeline irrigation, etc., but due to the particularity of yam growth, it is necessary to plow, ditch, tie up, etc. every year, and sprinkler irrigation facilities cannot be laid in the field. High-efficiency water-saving irrigation field facilities conflict with the cultivation of yam

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