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A new maize variety Tianrun 189 was selected as experimental material, and a two-factor split plot design was adopted. Three treat- ments of density level were set up(Al treatment 42 000 plants/hm²; A2 treatment 48 000 plants/hm²; A3 treatment, 54 000 plants/hm²). 4 fertilizer application level treatments were as follows: B1 was treated with conventional fertilizer, 750 kg/hm² compound fertilizer and 150 kg/hm² urea; B2, B3 and B4 treatments were treated with slow-release fertilizer 600,750 and 900 kg/hm², respectively. The main agro- nomic characters, yield and economic benefit of maize variety Tianrun 189 under 3 densities and 4 fertilization levels were studied. Results showed that planting density, fertilizer amount and interaction between fertilizer amount and planting density had significant or extremely signifi- cant effects on plant characters, ear traits and yield. Under different planting densities, A3 had the highest yield of Tianrun 189, was significant or extremely significant higher than treatment Al, but showed no significant differences with A2 treatment. Under different fertilization amount, B4 treatment had the highest yield of Tianrun 189, was extremely higher than B2 treatment, but had no significant differences with B3 and B1. Under the interaction between fertilizer amount and planting density, A3B1 treatment had the highest yield in spring sowing, which reached 8 494.50 kg/hm and was significantly higher than A3B2 treatment. But A3B4 and A3B3 treatments had no significant differences. In autumn sowing, A3B4 treatment had the highest yield (8276.50 kg/hm²) but had no significant differences with A3B1 and A3B3 treatments. Accord- ing to the economic benefits, benefits of B2, B3 and B4 treatments were all higher than normal application treatment B1, and B3 treatment had the highest benefit, reaching 12 353.59 Yuan/hm², was 10.77% higher than B1 treatment. In general, proper density of Tianrun 189 was 48 000-54 000 plants/hm². Under this density, applying 750-900 kg/hm² slow release compound fertilizer (N-P2O5-K2O=24-6-10) could obtain better yield and economic benefit. [ABSTRACT FROM AUTHOR]

In order to optimize the formula of kiwi fruit pulp beverage based on ultra-high pressure treatment, the forced stratification rate was used as an indicator in this study, single factor tests and response surface experiments were performed to optimiz the formula. The results showed that the amount of kiwi fruit puree was 47%, the addition of sucrose was 12%, and the thickener was 0. 14%. After ultra-high-tech treatment, the forced delamination rate can reach to a good ratio of 47%. The color and particle size of the optimized products indicated that L value was 38 and ΔE was less than 2, the color of the product was bright and uniform. The particle size of volume average D[4, 3] was 214 μm. The product showed good stability. [ABSTRACT FROM AUTHOR]