Slow-release fertilizer for watermelons in dry sandy field

Abstract

The invention discloses a slow-release fertilizer for watermelons in dry sandy field. The slow-release fertilizer comprises the following compositions in percentage by weight: 20 percent of urea, 60 percent of calcium superphosphate, 19.4 percent of potassium sulfate, and 0.6 percent of sustained release drug; the sustained release drug is prepared by mixing nitrogen inhibitor and phosphorous activating agent according to weight ratio of 3:1; and the nitrogen inhibitor is prepared by mixing nitrification inhibitor and urease inhibitor according to a weight ratio of 1:0.3. The slow-release fertilizer for watermelons in dry sandy field has the advantages of being simple to apply, capable of conducting application at one time, low in production cost, and high in fertilizer utilization rate, and increasing the yield of watermelons.

Description

technical field [0001] The invention relates to a chemical fertilizer, in particular to a watermelon slow-release fertilizer for dry sand fields. Background technique [0002] The dry sand field is a field covered with 7-20cm thick gravel or pebbles with coarse sand on the surface. It is a unique and traditional drought-resistant farming method in the arid and semi-arid areas of Northwest my country. The dry farming form created in long-term farming practice is one of the methods of soil covering and soil and water conservation. [0003] my country's sand fields are mainly concentrated in central Gansu, where rainfall is relatively low, and parts of Ningxia, Qinghai and Xinjiang. Practice and research have shown that compared with soil fields, sandy fields can reduce evaporation and runoff, increase soil temperature, increase water infiltration, prevent soil erosion and soil secondary salinization. [0004] In recent years, with the development of sand field melon and veget...

AI Technical Summary

Problems solved by technology

However, due to the particularity of the sand field, in the long-term cultivation process, the difficulty of fertilization has always been the main problem that plagues the production of the sand field. Conventional fertilization is not only labor-intensive, high production cost, low fertilizer utilization rate, and easy to cause sand and soil mixing, resulting in sandy field ecology. Decreased function, shortening the service life of the sand field