ẢNH HƯỞNG CỦA LƯỢNG BÓN NPK (13:13:13+TE) ĐẾN SINH TRƯỞNG, NĂNG SUẤT VÀ CHẤT LƯỢNG GIỐNG DƯA LÊ THƠM HÀN QUỐC VA.76 VỤ XUÂN HÈ NĂM 2022 TẠI TỈNH THANH HÓA

Abstract

The study was conducted in the spring-summer season of 2022 to build up the guide line for cultivation of Korean melon production under the condition in Thanh Hoa. The experiment consisted of 4 treatments of NPK fertilizer (13:13:13 + TE) with different doses labeled as CT1, CT2, CT3 and CT4, respectively, with 1200, 1400, 1600 and 1800 kg/ha arranged in randomized complete block (RCB) with 3 replicates. The amount of base fertilizer included 15 tons of Rotten manure + 400 kg calcined limestone/ha. Research results show that different doses of fertilizer have certain effects on the growth, yield and quality of Korean melon. In the spring-summer season of 2022, the growth time to harvest was 85 days, the actual yield was on average 50.8 - 65.6 tons/ha, the Brix quality was from 10.0 to 12.0%. The formula CT3 using 1.600 kg of NPK (13:13:13+TE)/ha had a total growth time of 85 days, the actual yield was 65.6 tons/ha, the Brix quality was 12.0%, the total income reached 984.0 million/ha and the highest net profit was 828.8 million/ha, profit margin reached 3.78 times. Therefore, this amount of fertilizer can be applied to Korean melon production under similar conditions.