Low-temperature-resistant suspension liquid fertilizer capable of intelligently regulating and controlling pH of irrigation water as well as preparation method and application thereof

Abstract

The invention relates to a low-temperature-resistant suspension liquid fertilizer capable of intelligently regulating and controlling pH of irrigation water as well as a preparation method and application of the low-temperature-resistant suspension liquid fertilizer. The suspension liquid fertilizer contains a macroelement fertilizer, a composite trace element fertilizer, a pH intelligent regulation factor, an anti-freezing auxiliary agent and a stress-resistant synergistic factor, wherein the mass ratio of the anti-freezing auxiliary agent to the stress-resistant synergistic factor is (20-60): (0.5-2.0); the pH intelligent regulation factor is a mixture of potassium dihydrogen phosphate, potassium hydroxide and humic acid. The suspension liquid fertilizer does not cake or precipitate at-20 DEG C, has good fluidity and comprehensive nutrients, can rapidly supplement nutritional requirements of various crops in growth period under low-temperature conditions, and enhance the cold resistance of the crops; meanwhile, the pH of irrigation water can be intelligently regulated and controlled, the environment of the rhizosphere region of crops can be always kept in a neutral range, and the problem of soil acidification or salinization caused by fertilization or irrigation can be effectively solved after long-term use.

Description

technical field [0001] The invention belongs to the technical field of liquid fertilizers, and in particular relates to a low-temperature suspension-resistant liquid fertilizer for intelligently regulating the pH of irrigation water, a preparation method and an application thereof. Background technique [0002] Liquid fertilizers can be rationally formulated according to soil nutrient conditions and the needs of plants for nutrients. The formula is flexible and can be directly absorbed by crops to improve fertilizer utilization. Compared with solid fertilizers, the preparation process reduces evaporation, granulation and other processes, reducing Cost of production. There are various methods of fertilizing liquid fertilizers, such as foliar spraying, drip irrigation, sprinkler irrigation, and can also be used in combination with pesticides. With the advantages of high quality, high efficiency, energy saving, and environmental protection, it has become one of the chemical fe...

AI Technical Summary

Problems solved by technology

Without water supply, the growth and development of crops tend to stop, or even die. However, the pH of water in different regions is different. After long-term use for soil irrigation, it may cause soil acidification or salinization. Generally, the pH value of plant roots is required to be 6.4 Between -6.8, above or below this range, the activity of the plant root system will be inhibited, and the root system may be necrotic in severe cases, resulting in the death of the entire plant; the current research on liquid fertilizers mainly focuses on solubility, stability, and nutrition. However, the research on the impact on the pH of irrigation water is weak. Therefore, the existing liquid fertilizers basically do not have the function of regulating the pH of irrigation water.

[0004] When the ambient temperature continues to be lower than the temperature required for normal plant growth, the temperature will form low temperature stress on the plant. When the plant is subjected to low temperature stress, various enzyme activities and membrane systems will be damaged, the intracellular environment will be dehydrated and crystallized, and the cell metabolism will be disordered. Decreased vigor reduces the uptake of mineral elements by roots, which can seriously affect the growth, development and survival of plants

[0005] Chinese patent document 201410842896.8 discloses a large-element type antifreeze liquid fertilizer and its preparation method and application. Although the liquid fertilizer can still maintain good fluidity below minus ten degrees, it has not been verified whether it can promote crops at low temperatures. growth; Chinese patent document 201510319253.X discloses a high-concentration and anti-low temperature liquid phosphorus and potassium fertilizer and its preparation method. The growth of eggplant, cucumber and other crops, but does not have the function of automatically adjusting the pH of irrigation water