Abstract:

Studying of a reasonable balance of papaya between high-productivity & efficiency and the fertilization model ensure high yield and quality of papaya, efficiency fertilization model. Through 2-year successive trials in fixed test field, 5 different fertilization modes were conducted to research the effects on vegetative growth, yield and quality of papaya and analyze the economic benefit of different fertilization modes (applying special fertilizer, mode T1; combining special fertilizer and modifier, mode T2; combining special fertilizer and purified organic fertilizer, mode T3; applying purified organic fertilizer, mode T4; applying microbial organic fertilizer, mode T5). It showed that: compared with mode T1, mode T2, T3 have good performance on promoting crown size and plant height. The yield of each individual plant in the test field reaches 40.2-49.3 kg, each individual fruit on average reaches 0.38-0.41 kg, and each individual plant produces 105.8-120.4 qualified fruits. Compared with mode T1, mode T3 increases the papaya yield at 18.6% obviously. The result of analysis on sugar degree variance indicates that sugar degree variance from mode T1 was lower than that from mode T4 and T5, sugar degree variance from mode T4 and T5 was lower than that from mode T2 and T3. Vitamin C content of the fresh flesh of fruit from different fertilization modes indicates the same tendency with sugar degree analysis result. Considering economic effects, mode T3 gains the highest benefit (413819 yuan/hm2). Value to cost ratio (VCR) of the five modes ranks as T3≈T2>T5≈T1>T4.