Base fertilizer for sweet potato

Abstract

The invention relates to a fertilizer for plants, and especially relates to a base fertilizer for sweet potatoes. In order to solve the production problems of excess nitrogen during current sweet potato plantation process, and severe potassium deficiency during tuber expansion stages, the invention provides a base fertilizer for sweet potatoes. The preparation method of the base fertilizer for sweet potatoes provided by the invention comprises the following steps: putting sawdust treated by hydrochloric acid in mother liquor prepared by effective components, fully soaking, and drying to obtain the product. The effective components of the mother liquor comprise, by weight, 5-8 parts of amino acids, 5-8 parts of humic acids, 10-15 parts of potassium dihydrogen phosphate, 1 part of sodium selenite, 1 part of zinc sulfate, and 1 part of ferrous sulphate. The potassium content of the base fertilizer for sweet potatoes provided by the invention is 1.5-2 times as high as the nitrogen content, which accords with the condition that the potassium content is 1.57 times as high as the nitrogen content in sweet potatoes; the base fertilizer has good slow release performance, and can provide potassium for a long time.

Description

technical field [0001] The invention relates to a fertilizer for plants, in particular to a base fertilizer for sweet potatoes. Background technique [0002] Sweet potato is one of the food crops in the north of my country. It has the advantages of strong adaptability, drought tolerance, less pests and diseases, and high yield. It is an ideal high-efficiency crop. [0003] According to analysis, every 500 kg of fresh sweet potatoes contains 1.75 kg of nitrogen, 0.9 kg of phosphorus, and 2.75 kg of potassium. Therefore, the main components required by sweet potatoes are the most potassium, followed by nitrogen, and the least phosphorus. Potassium can promote the growth of tubers, increase starch content, and has the advantage of storage resistance. [0004] In recent years, with the increase in the amount of nitrogen fertilizer, the input of the three elements of nitrogen, phosphorus and potassium has been seriously out of balance, mainly manifested in the excess of nitrogen...

AI Technical Summary

Problems solved by technology

In addition, sweet potatoes have different requirements for potassium fertilizers at different growth stages. Because the fertilizer does not have slow-release properties, potassium is excessive in the early growth stage of sweet potatoes, resulting in waste; and in the tuber expansion stage of sweet potatoes, the supply of potassium is insufficient, which affects sweet potato growth

If multiple fertilization methods are used, the labor intensity will increase, and in the middle and late stages of growth, the seedlings and vines will almost cover the ground, which will easily lead to the problem of cutting off the root system