Controlled release fertilizer for cucumber and preparing method thereof

Abstract

The invention discloses a controlled release fertilizer for cucumber and preparing method thereof. The fertilizer is prepared from, by weight, 20-30 parts of potassium dihydrogen phosphate, 10-15 parts of sulfate, 20-30 parts of urea, 25-35 parts of polylactic acid, 15-25 parts of polyvinyl alcohol. The method comprises making the compound fertilizer by pelleting after mixing potassium dihydrogen phosphate, sulfate and urea.The method controls the element content of nitrogen, phosphorus, potassium in compound fertilizer and the particle size of compound fertilizer, thus to improve the air permeability of fertilizer. The degradable period of degradable materials after mixing polylactic acid with polyvinyl is close to the growth cycle of cucumber, so that the method also comprises packaging the fertilizer according to the strict ratio of degradable materials and compound fertilizer. And the controlled release fertilizer can satisfy the nutrition which cucumber requires when growing and guarantee the long-term average release of nitrogen, phosphorus, potassium,which improve the quality and output of cucumber.

Description

technical field [0001] The invention relates to the technical field of fertilizer processing, in particular to a special controlled-release fertilizer for cucumbers and a preparation method thereof. Background technique [0002] Cucumber is an annual vine or climbing herbaceous plant in the Cucurbitaceae family. Stems and branches are elongated, have ribs, and are covered with white rough hairs. Tendrils thin. The petiole is slightly rough, with rough bristles; the blade is broadly ovate, heart-shaped, membranous, and the lobes are triangular and toothed. Monoecious. Male flowers: constant clusters in leaf axils; pedicel slender, puberulent; corolla yellow-white, corolla lobes oblong-lanceolate. Female flowers: solitary or sparsely clustered; pedicel stout, pilose; ovary scabrous. The fruit is oblong or cylindrical, yellow-green when ripe, with a rough surface. Seeds are small, narrowly ovoid, white, without margins, and both ends are nearly acute. Due to the high edi...

AI Technical Summary

Problems solved by technology

Due to the high edible value and nutritional value of cucumbers, cucumber cultivation techniques have emerged one after another. The control of fertilizers in the cucumber cultivation process is particularly critical. Since cucumbers are cultivated in the soil, after a period of fertilizer application, except for a small part In addition to being absorbed by cucumbers, others will be lost, resulting in a lot of waste. In order to reduce this loss, it is necessary to coordinate the release of nutrients in fertilizers with the absorption of nutrients in cucumbers. Therefore, the development of controlled-release fertilizers is becoming more and more. For this reason, the inventor provides a special controlled-release fertilizer for cucumbers and a preparation method thereof for the characteristics of cucumber growth.