In order to explore the degradation law and nutrient release characteristics of silicon fertilizer (SiO2) 42.4 kg/ha on pig manure bean and Gaodan grass under the condition of natural returning to the field, Guo Zihui and others from the School of Tropical Crops of Hainan University carried out the application of silicon fertilizer (SiO2) 42.4 kg/ha to pig manure bean. The effect of green manure on growth and nutrient content of Gaodancao and Gaodancao was studied under natural conditions by nylon mesh bag method. Nutrient release patterns. The results showed that the application of silicon fertilizer significantly increased the yield and silicon content of dung bean and high dan grass, and increased the nitrogen content of dung bean and the potassium content of high dan grass. The yield of Dancao increased by 27.87% and 24.90%; the content of Pure Silicon increased by 82.75% and 29.15%, respectively; the accumulation of nutrients (N+P+K) was increased by 30.60% and 28.80%; the nitrogen in pig feces and the potassium in Gaodan grass increased by 30.60% and 28.80%, respectively. 15.79% and 7.51%; after silicon application, the organic carbon degradation rate, nitrogen release rate and dry matter degradation rate of pig manure bean and high dan grass returning to the field from 3 to 56 days were significantly reduced. In the last 56 days, the degradation rates of organic carbon were 8.90% and 7.46%, the nitrogen release rates were 7.85% and 12.11%, and the dry matter degradation rate of pig feces was 12.53%; The effect of degradation law was not significant. The dry matter and organic carbon of Radix alba showed relatively high degradation acceleration. The nutrient release rates of nitrogen, phosphorus and potassium were 5.80-18.13% higher than those of Radix vulgare at 28 d after returning to the field. , laying the foundation for further improving the effect of green manure soil fertilization.
Sun Yongping from Nanjing Institute of Agricultural Sciences in Jiangsu hilly area studied the effect of different concentrations of Pure Silicon on the growth of strawberry in three-dimensional soilless culture. The results showed that the fresh weight and dry weight of strawberry plants increased in different concentrations of silicon, and the yield of strawberry plots increased by 20.9% in the 1.0 mmol/L treatment. The 1.0 mmol/LPure Silicon treatment significantly promoted the growth of strawberry plants and fruit yield. At the same time, the content of soluble solids and vitamin C in strawberry fruit quality indicators treated with 1.0 mmol/L silicon increased by 7.8% and 7.8%, respectively, compared with the control, which improved the fruit quality. The determination results of silicon content in strawberry plants showed that the silicon content of leaves in 0.1, 1.0 and 2.0 mmol/L treatments increased by 5.2%, 21.0% and 25.9%, respectively, compared with the control. In production, 1.0 mmol/L silicon treatment should be used to promote strawberry growth, improve strawberry yield and fruit quality.
Guilin Agricultural Science Research Center/Guilin Branch of Guangxi Academy of Agricultural Sciences Zhao Xiaomei and others studied the effects of different concentrations of silicon (Si) on the growth, photosynthetic characteristics and protective enzyme activities of watermelon seedlings. The influence of characteristics provides a theoretical basis. Methods: Using “Zaojia 8424” watermelon as experimental material, using hydroponics method, potassium silicate as silicon source, different silicon concentrations of 0 mg/L (CK), 28 mg/L (T1), 56 mg/L ( Effects of four treatments (T2) and 84 mg/L (T3) on the growth indexes, photosynthetic indexes and protective enzyme activities of watermelon seedlings. Results: In the range of 0-84 mg/LPure Silicon concentration, the transpiration rate (Tr) decreased with the increase of silicon concentration, and the chlorophyll content (SPAD value), POD and SOD activities increased with the increase of silicon concentration; 56 mg/LPure Silicon Compared with T3, T1 and CK treatments, the plant’s fresh weight was significantly increased by 33.47%, 52.42%, 65.59%, and the dry weight was significantly increased by 32.43%, 48.48%, Compared with T3, T1 and CK, the root length was significantly increased by 40.32%, 37.99% and 43.47%, respectively; the net photosynthetic rate was significantly increased by 32.78% and 37.53% compared with T1 and CK, and the stomatal conductance was significantly increased compared with T3, T1 and CK, respectively. Compared with T3, T1 and CK, the concentration of intercellular CO2 was significantly increased by 4.09%, 7.89% and 8.75%, respectively. The POD and SOD activities of T1, T2 and T3 treatment were increased on the 6th and 1st day respectively. It reached the maximum at 3 days, and the POD and SOD activities were higher than other treatments at 84 mg/L silicon concentration. Conclusion: The application of exogenous Pure Silicon can improve the photosynthesis and antioxidant enzyme activities of watermelon seedlings, and promote the growth of watermelon seedlings. The concentration of silicon in the nutrient solution is 56 mg/L.
Zeng Renjie from the Agricultural Technology Extension Station of Helong Township, Ninghua County, Fujian Province, studied the effects of different Pure Silicon fertilizers on the yield, quality and lodging resistance of Ninghua River Longgong rice, in order to provide information for the sustainable and stable development of Ninghua River Longgong rice. Technical Support. Taking ‘Yuzhenxiang’ as the test material, three different silicon fertilizer treatments [Senfu silicon fertilizer (S1), Cai Delong ETDA silicon fertilizer (S2), and no silicon fertilizer (S0, control)] were set to investigate the different silicon fertilizer treatments. Effects on yield formation, quality, stem morphology and mechanical characteristics of ‘Yuzhenxiang’. The results showed that the application of S1 treatment of Senfu silicon fertilizer and S2 treatment of Cai Delong ETDA silicon fertilizer was higher than the control without silicon fertilizer ‘Yuzhenxiang’, the yield was increased by 2.82% and 4.83%, and the number of effective ears increased by 11.57% and 13.74% compared with the control. The rate of whole milled rice increased by 7.48% and 13.07% compared with the control; the plant morphological characteristics (plant height, stem thickness, stem wall thickness, leaf length and width) had no significant effect, and the plant thrust resistance increased by 18.31% and 3.82%. The application of silicon fertilizer can increase the yield, quality and lodging resistance of rice to a certain extent, but there are differences in the promoting effect of different types of silicon fertilizer on rice. refer to.