Impacts and Demonstration Effects of Applying Long-acting Slow-release Fertilizer on Economic Yield of Peanut

[Objectives] To study the impacts and demonstration effects of long-acting slow-release fertilizer application on economic yield of peanut. [Methods] The 25, 30, 35, 40, 45, 50 kg of long-acting slow-release fertilizers were applied to 667 m2 of peanuts, and different amounts of urea were applied together. [Results] Applying 40 kg of long-acting slow-release fertilizer and 10.45 kg of urea had the best effect. Compared with the application of ordinary compound fertilizers, the plants did not age prematurely, the leaf diseases were mild, the stems and leaves remained dark green when harvested, and the stems and leaves had a longer functional period. Bearing shoots increased by 1.7, single-plant full pods increased by 2.4, double-seed peanuts increased by 3.2, empty pods decreased by 0.5, and single-seed peanuts decreased by 0.7. The experimental demonstration results show that the spring-sowed peanuts had an average yield increase of 29.0-67.2 kg/667 m2, and the yield increase rate was 7.35%-16.89%, and the difference was extremely significant. [Conclusions] In the high-yield cultivation of peanuts, the application of long-acting slow-release fertilizer can be promoted to improve peanut production

Impacts and Demonstration Effects of Applying Long-acting Slow-release Fertilizer on Economic Yield of Peanut

[Objectives] To study the impacts and demonstration effects of long-acting slow-release fertilizer application on economic yield of peanut. [Methods] The 25, 30, 35, 40, 45, 50 kg of long-acting slow-release fertilizers were applied to 667 m2 of peanuts, and different amounts of urea were applied together. [Results] Applying 40 kg of long-acting slow-release fertilizer and 10.45 kg of urea had the best effect. Compared with the application of ordinary compound fertilizers, the plants did not age prematurely, the leaf diseases were mild, the stems and leaves remained dark green when harvested, and the stems and leaves had a longer functional period. Bearing shoots increased by 1.7, single-plant full pods increased by 2.4, double-seed peanuts increased by 3.2, empty pods decreased by 0.5, and single-seed peanuts decreased by 0.7. The experimental demonstration results show that the spring-sowed peanuts had an average yield increase of 29.0-67.2 kg/667 m2, and the yield increase rate was 7.35%-16.89%, and the difference was extremely significant. [Conclusions] In the high-yield cultivation of peanuts, the application of long-acting slow-release fertilizer can be promoted to improve peanut production

Improved Pyroelectric Properties of CaBi4Ti4O15 Ferroelectrics Ceramics by Nb/Mn Co-Doping for Pyrosensors

The pyroelectric properties of Nb(Mn)-doped and Nb/Mn co-doped CaBi4Ti4O15 (CBT) bismuth layer-structured ferroelectric ceramics were investigated. It was found that Nb/Mn co-doping resulted in stronger enhancement of pyroelectric properties than that of single Nb or Mn doping. The mechanism of doping effect was explained by the distortion of the [BO6] octahedra induced by the doped Nb and Mn cations occupying the B-site of the pseudoperovskite structure. A large pyroelectric coefficient of 84.4 μC/m2K was obtained at room temperature for Nb/Mn co-doped CBT (CBTN-Mn) ceramics, higher than that of pure, Nb or Mn-doped counterparts, being on the order of 35.9, 58.2, 44.0 μC/m2K, respectively. The enhanced pyroelectric coefficient together with reduced dielectric constant (99) and dielectric loss (0.002) led to greater improvement of figures of merit (FOMs), including FOMs for voltage responsivity (Fv ~ 3.95 x 10−2 m2/C) and detectivity (Fd ~ 2.44 x 10−5 Pa−1/2), in CBTN-Mn ceramics. Furthermore, the temperature variations of Fv and Fd were found to be 24% and 68%, respectively, over a broad temperature range from room temperature to 350°C, making CBTN-Mn ceramics potential candidate for high-temperature pyroelectric devices

Enhanced piezoelectric properties of Nb and Mn co-doped CaBi4Ti4O15 high temperature piezoceramics

The properties of CaBi4Ti4O15 (CBT), CaBi4Ti3.95Nb0.05O15 (CBTN) and CaBi4Ti3.95Nb0.05O15 + 0.2 wt% MnO2 (CBTN-Mn) ferroelectric ceramics with bismuth layer structure were studied. Significant enhancement of piezoelectric coefficient was obtained for CBTN-Mn ceramics (d33 = 23 pC/N), being nearly three times that of CBT counterpart (d33 = 8 pC/N). Together with its high Curie temperature (Tc = 790 °C), low dielectric loss (tanδ = 0.2%), high resistivity (ρ = 4.2 x 106 Ω cm at 500 °C) and good thermal stability up to 700 °C, the CBTN-Mn ceramic is a potential material for high temperature piezoelectric applications