CN-121986797-A - Sugarcane lodging-resistant pesticide fertilizer granule and preparation method thereof

CN121986797ACN 121986797 ACN121986797 ACN 121986797ACN-121986797-A

Abstract

The invention provides sugarcane lodging-resistant pesticide fertilizer particles and a preparation method thereof, and relates to the technical field of pesticide fertilizer particles. The pesticide fertilizer granule comprises 0.8-1.2 wt% of cyhalothrin-clothianidin complex, 0.4-0.6 wt% of synergistic agent, 1-3 wt% of binder and the balance of slow-release fertilizer, wherein the slow-release fertilizer comprises a slow-release matrix and lodging-resistant fertilizer filled in the slow-release matrix, and the lodging-resistant fertilizer at least comprises nitrogen fertilizer, phosphate fertilizer, potash fertilizer and silicon fertilizer. The invention can inhibit pests in the growth of the sugarcane, improve the absorption capacity of the sugarcane to fertilizer nutrient components, and effectively improve the lodging resistance of the sugarcane in severe weather.

Inventors

CAO ZHIHENG
HUANG LIANZHEN
LI ZHENGKUN
XU HONGKUAN
HUANG BIAO
TAO DAIYU

Assignees

广西汇丰生物科技有限公司

Dates

Publication Date: 20260508
Application Date: 20251217

Claims (10)

1. The sugarcane lodging-resistant pesticide fertilizer granule is characterized by comprising 0.8-1.2 wt% of cyhalothrin-clothianidin complex, 0.4-0.6 wt% of synergistic agent, 1-3 wt% of binder and the balance of slow-release fertilizer, wherein the slow-release fertilizer comprises a slow-release matrix and lodging-resistant fertilizer filled in the slow-release matrix, and the lodging-resistant fertilizer at least comprises nitrogen fertilizer, phosphate fertilizer, potash fertilizer and silicon fertilizer.
2. The pesticide fertilizer granule of claim 1, wherein the preparation method of the cyhalothrin-clothianidin complex comprises the steps of performing surface functionalization on lignin to obtain modified lignin, mixing and dissolving cyhalothrin and clothianidin in a ketone solvent to obtain mixed solution, dispersing the modified lignin in the mixed solution, concentrating and separating to obtain composite lignin, coating a slow-release protective layer on the surface of the composite lignin, and spray-drying to obtain the cyhalothrin-clothianidin complex.
3. The pesticide fertilizer granule of claim 2, wherein the surface functionalization of lignin comprises mixing lignin in a silane solution, separating and drying to obtain a modified precursor, mixing and reacting the modified precursor in an anhydride solution, separating and drying to obtain a modified intermediate, soaking the modified intermediate in dilute sulfuric acid, reacting, separating and drying to obtain modified lignin.
4. The fertilizer granule as set forth in claim 3, characterized in that the silane solute in the silane solution comprises KH550, KH560, and/or the mass ratio of the lignin to the silane solute in the silane solution is 1 (0.15-0.25), and/or the anhydride solute in the acid anhydride solution comprises succinic anhydride, and/or the mass ratio of the modifying precursor to the anhydride solute in the acid anhydride solution is 1 (0.2-0.3), and/or the modifying precursor is mixed and reacted in the acid anhydride solution at 50-70 ℃, and/or the concentration of the diluted sulfuric acid is 5-10%, and/or the modifying intermediate is ultrasonically infiltrated in the diluted sulfuric acid.
5. The fertilizer granule as set forth in any one of claims 2 to 4, characterized in that the lignin has a weight average molecular weight of 1000-10000 and/or the mass ratio of cyhalothrin to clothianidin is 1 (0.2-5), and/or the ketone solvent comprises acetone and/or the modified lignin and the mixed solution The mixing ratio of the modified lignin is 0.06g/mL-0.08g/mL, and/or the modified lignin is decompressed and concentrated at 40-60 ℃, and/or the modified lignin is 85-95% by mass in the composite lignin, and/or the modified lignin is concentrated in a mixed solution by ultrasonic, and/or the composite lignin is dispersed in a pectin solution and then spray-dried to obtain the cyhalothrin-clothianidin complex.
6. The medical fertilizer granule as set forth in claim 1, wherein the preparation method of the slow-release fertilizer comprises preheating a slow-release matrix under vacuum to obtain a vacuum matrix, immersing the vacuum matrix in a saturated solution of the lodging-resistant fertilizer, pressurizing, concentrating and separating to obtain a composite matrix, immersing the composite matrix in polysaccharide mucilage, separating and drying to obtain the slow-release fertilizer.
7. The medical fertilizer granule as set forth in claim 6, wherein the preparation method of the slow-release matrix comprises dispersing molecular sieve in organic carbon solution, evaporating to dryness and molding to obtain precursor, calcining the precursor in protective atmosphere to obtain intermediate, etching the intermediate in alkaline solution, calcining in nitrogen-containing atmosphere to obtain composite, crushing under mechanical pressure, and sieving to obtain slow-release matrix.
8. The fertilizer granule as set forth in claim 6, characterized in that it is preheated at 300-500 ℃, and/or preheated under a vacuum of-1 MPa to-3 MPa, and/or the solid-to-liquid ratio of the vacuum matrix to the saturated solution is 0.1g/mL-0.2g/mL, and/or pressurized to 0.1MPa-0.2MPa, and/or concentrated to a liquid level 1mm-2mm higher than the vacuum matrix, and/or concentrated at 70-80 ℃, and/or the average particle diameter of the slow-release fertilizer is 0.5mm-3mm.
9. The granule as set forth in claim 1, wherein the nitrogen fertilizer comprises urea, ammonium nitrate, and/or the phosphate fertilizer comprises diammonium phosphate, monoammonium phosphate, and/or the potash fertilizer comprises potassium chloride, potassium sulfate, and/or the silicon fertilizer comprises sodium silicate, potassium silicate, and/or the synergist comprises aminobutyric acid, and/or the binder comprises sodium carboxymethyl cellulose.
10. A method for preparing the medicinal fertilizer particles according to any one of claims 1 to 9, which comprises mixing cyfluthrin-clothianidin complex, a synergist and a slow-release fertilizer in a binder solution, and spray drying to obtain the medicinal fertilizer particles.

Description

Sugarcane lodging-resistant pesticide fertilizer granule and preparation method thereof Technical Field The invention relates to the technical field of pesticide fertilizer particles, in particular to a sugarcane lodging-resistant pesticide fertilizer particle and a preparation method thereof. Background Sugarcane is one of the important sugar crops in China, plays an important role in agricultural economy, can provide high-quality raw materials for sugar industry, is an important energy plant, and is related to national sugar safety and energy strategy. Sugarcane is a perennial tall and solid herbaceous plant, the root and stem of the sugarcane is thick and developed, the biological yield is high, but the sugarcane tends to move upwards in the later growth stage, so that the sugarcane is easy to fall, blow and fold and the like in typhoons, heavy rainfall and other weather. After the sugarcane lodges, part of root systems are broken or damaged, the water absorption and moisture absorption capacity is weakened, the absorption and metabolism of the sugarcane body to moisture and mineral elements are directly influenced, in addition, the lodged sugarcane can disturb the field group structure, further, the problems of uneven distribution, mutual extrusion and the like of sugarcane plants are caused, the germination of the gas roots and side buds of the sugarcane is promoted, a large amount of nutrients are consumed, the thinning of the sugarcane stems and the increase of hollow internodes are finally caused, the yield and the accumulation of sugar of the sugarcane are seriously influenced, in addition, the lodged sugarcane can cause serious obstacle to mechanical harvesting, and the production cost of the sugarcane is remarkably increased. In the prior art, lodging is often prevented by carrying out nutrition regulation and control on sugarcane by using lodging-resistant chemical fertilizers, the mechanical strength of the sugarcane stalks and the anchoring capability of root systems to soil are enhanced by adjusting the proportion of elements in the chemical fertilizers, for example, lignin deposition in the sugarcane stalks is enhanced by adding potash fertilizers into the chemical fertilizers, the stalks are promoted to be stronger and have toughness, the root systems of the sugarcane can be promoted to develop by adding phosphate fertilizers, the supporting capability of the root systems to the stalks is promoted to deeply tie the soil, and meanwhile, the balance of nitrogen, phosphorus and potassium elements in the chemical fertilizers is required to be balanced so as to promote the growth and lodging-resistant capability of the sugarcane. However, the slow release effect of most of the pesticide fertilizer particles is poor, the effect duration period is short, and soil hardening is easy to cause when the fertilizer is applied for a long time. It is therefore desirable to provide a solution to the above-mentioned problems. Disclosure of Invention The invention aims to provide a sugarcane lodging-resistant pesticide fertilizer granule and a preparation method thereof, which can inhibit pests in the growth of sugarcane and improve the absorption capacity of the sugarcane to fertilizer nutrient components, thereby effectively improving the lodging resistance of the sugarcane in severe weather. According to the first aspect, the sugarcane lodging-resistant pesticide fertilizer granule comprises 0.8-1.2 wt% of cyhalothrin-clothianidin complex, 0.4-0.6 wt% of synergistic agent, 1-3 wt% of binder and the balance of slow-release fertilizer, wherein the slow-release fertilizer comprises a slow-release matrix and lodging-resistant fertilizer filled in the slow-release matrix, and the lodging-resistant fertilizer at least comprises nitrogen fertilizer, phosphate fertilizer, potash fertilizer and silicon fertilizer. The preparation method of the cyhalothrin-clothianidin complex comprises the steps of performing surface functionalization on lignin to obtain modified lignin, mixing and dissolving cyhalothrin and clothianidin in a ketone solvent to obtain a mixed solution, dispersing the modified lignin in the mixed solution, concentrating and separating to obtain composite lignin, coating a slow-release protective layer on the surface of the composite lignin, and performing spray drying to obtain the cyhalothrin-clothianidin complex. Optionally, the surface functionalization of lignin comprises mixing lignin in silane solution, separating and drying to obtain modified precursor, mixing modified precursor in anhydride solution, separating and drying to obtain modified intermediate, soaking the modified intermediate in dilute sulfuric acid, separating and drying to obtain modified lignin. Optionally, the silane solute in the silane solution includes KH550, KH560. Optionally, the mass ratio of lignin to silane solute in the silane solution is 1 (0.15-0.25). Optionally, the anhydride solute in the anhydride solution compr