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a. Promotes seed germination and improves seedling resistance. In rice, soaking seeds in a 10 mg/L DA-6 solution for 36 hours can improve seed germination potential and vigor index, and increase the activity of α-amylase and total amylase during germination. It results in robust seedlings, increases the root-to-shoot ratio and root development, significantly improves chlorophyll content and root vitality, enhances plant resistance to stress, improves cold resistance, and alleviates herbicide damage. In corn, soaking seeds in a 5-20 mg/L DA-6 solution for 12 hours can increase root length, root fresh weight, plant height, and plant fresh weight. It can alleviate the damage caused by chlorpyrifos and azoxystrobin to corn growth to varying degrees and promotes normal germination. For corn, a mixture of 10 mg/L aminoethyl ester and herbicide can be sprayed at the 3-leaf stage. When mixed with dicamba, imazalil, or clethodim, it can reduce herbicide damage to corn and promote corn growth. When mixed with mesotrione and nicosulfuron, it not only improves the herbicide’s efficacy against weeds but also promotes corn growth. For soybeans, soaking seeds in a 160-320 mg/L aminoethyl ester solution for 2 hours can improve soybean seedling resistance and increase the activity of protective enzymes under drought stress. Spraying soybean seedlings with a mixture of 10 mg/L aminoethyl ester and azoxystrobin during the seedling stage can increase leaf length and width, increase leaf area, thereby accelerating photosynthetic rate, promoting nutrient accumulation in the plant, ultimately improving the overall metabolic capacity of the plant, alleviating the damage of high concentrations of azoxystrobin to soybean seedlings, and enhancing soybean’s resistance to stress. Soaking spinach seeds in a 5 mg/L aminoethyl ester solution for 12 hours significantly promoted germination, increasing germination rate by 68%–102.86%, chlorophyll a content by 13.45%–50.99%, chlorophyll b content by 10.18%–75.55%, and carotenoid content by 9.82%–48.89%. For peppers, spraying seedlings with a 30 mg/L aminoethyl ester solution increased leaf color, root activity, malondialdehyde (MDA) content, superoxide dismutase (SOD) activity, and proline content, improving net photosynthetic rate and root vigor, effectively mitigating the effects of high-temperature stress on seedling growth. For eggplants, a single, even spray of eggplant seedlings with a 20 mg/L aminoethyl ester solution increased chlorophyll content and root vigor, effectively mitigating the effects of high-temperature stress on seedlings.