Composite modifier and improvement method for relieving soil structure obstacle of pepper garden

The invention provides a composite modifier. The composite modifier is prepared from the following raw materials in parts by weight: 300-500 parts of biochar and 169-435 parts of slow-release formula fertilizer, 250 to 300 parts of organic fertilizer; 50 to 80 parts of a microbial agent; the slow-release formula fertilizer comprises 88-182 parts of nitrogen fertilizer based on the dosage of N; the phosphate fertilizer is 31-68 parts by using P2O5, and the potash fertilizer is 50-185 parts by using K2O. The composite modifier can increase soil organic matters, improve the soil structure and improve the bio-availability of soil nutrients. 本发明提供了一种复合改良剂，包括如下重量份的原料：生物炭300～500份，缓释配方肥169～435份；有机肥250～300份；微生物菌剂50～80份；所述缓释配方肥包括：以N用量计氮肥88～182份；以P2O5用量磷肥31～68份，以K2O用量计钾肥50～185份。本发明的复合改良剂能够增加土壤有机质、改善土壤结构，提高土壤养分生物有效性。