Method for interplanting stipa grandis in urban garden in saline and alkaline area

[0016] Example

[0017] Stipa grandis was chosen to be interplanted in urban gardens in Tianjin Binhai New Area. Tianjin Binhai New Area is located in the Bohai Bay. The soils in Tanggu and Dagang are especially salinized, with high salinity, lack of fertility and low organic matter content.

[0018] The Stipa grandis cultivation method includes the following steps:

[0019] 1) Cultivation site selection: choose to plant under urban broad-leaved forest in saline-alkali area, 2-5 meters above sea level; choose Stipa grandis seeds, germination rate is greater than or equal to 85%; apply garden greening organic fertilizer or urban tree branch fermented organic fertilizer 300kg before sowing /Mu, avoid trees and turn the soil 50cm deep, mix the upper soil with 20% river sand based on the weight of the soil, and then prepare the land to make the land ready for sowing;

[0020] 2) The sowing time of Stipa grandis is in early April in early spring. The soil preparation should be fine. After sowing, cover 0.5 cm of fine soil to keep the water content of the soil 30-40%, and carry out mulching for heat preservation and moisture retention; when the temperature is stable after sowing Seedlings emerge within 5-6 days. Before sowing, the seeds of Stipa grandis are soaked in water containing 0.2-0.3% acetic acid and irradiated under ultraviolet light for 1-3 hours. Stipa grandis is broadcasted with 0.8-1.2 kg per mu. When planting, apply 300 kg/mu of organic fertilizer for garden greening or 300 kg/mu of fermented organic fertilizer from urban tree branches.

[0021] 3) Water once after emergence, and keep the soil water holding capacity between 35% and 50%;

[0022] 4) By the end of April and the beginning of May, when the average daily temperature reaches 15 degrees Celsius, remove the mulch, water once a month, maintain the soil water holding capacity at 35% to 45%, and fertilize mainly by supplementing phosphorus and potassium fertilizer;

[0023] 5) Harvest from the end of July to early August, or harvest the fallen caryopsis in early September.

[0024] According to the test, under the same conditions, soaking Stipa grandis seeds in water containing 0.2-0.3% acetic acid before sowing and irradiating them under UV light for 1-3 hours can increase the emergence rate by 18%.

[0025] Applying organic fertilizer for landscaping or urban tree branches fermented organic fertilizer can achieve good results. The yield of Stipa grandis can reach 1,800 kg and 1,850 kg per mu, respectively.

[0026] In this example, the raw materials for the preparation of organic matter are all from the branches of the urban maintenance in Tianjin Binhai New Area. The preparation method of the organic fertilizer is as follows:

[0027] (1) Break the branches of urban trees into wood powder as the main material, and spray water to make the wood powder moist;

[0028] (2) For every 10,000 parts of dry wood powder, add the following amount of bacterial agent 1: 20-30 parts, soft rot fungi 80-100 parts, brown rot fungi 80-100 parts, white rot fungi 80-100 parts, lactic acid bacteria 20 -25 servings, pile and ferment indoors for 5-9 days; heat the obtained fermented product to 70-80 degrees Celsius for 30-60 minutes, or irradiate it under ultraviolet light for 1-3 hours;

[0029] (3) Add bacteria 2 per 10,000 parts of dry wood powder at room temperature: 10-25 parts of heat-resistant bacillus, 10-20 parts of lactic acid bacteria, 8-15 parts of bifidobacteria, 20 photosynthetic bacteria -25 parts, 10-20 parts of yeast flora, 20-30 parts of actinomycetes, to prevent the biological growth of aerobic humic acid bacteria and butyric acid bacteria, and ferment the mixture for fermentation in a fermentation tank, Start-up temperature is 20℃, and fermentation temperature rise should be controlled below 70-75℃. Fermentation is 15-18 days. Therefore, oxygen supply measures should be increased during operation, and it is advisable to mix well, turn frequently, and ventilate; The fermented product is irradiated under ultraviolet light for 1-3 hours;

[0030] (4) Add bacterial agent 3: 20-30 parts of yeast and 10-25 parts of photosynthetic bacteria per 10,000 parts of dry wood powder, and ferment for 6-8 days to obtain the fermented product;

[0031] (5) Dehydrating the fermented product to obtain organic fertilizer.

[0032] Without wishing to be bound by any theory, the organic matter obtained in the same area may contain more reasonable nutrients required for plant growth in the same area.

[0033] The sources of the bacteria used in the examples are as follows:

[0034] Respectively purchased from the market (for example, from Yangzhou Haicheng Biotechnology Co., Ltd., Shaanxi Sunfu Natural Products Co., Ltd., Fengyi Probiotics, Su Kehan ​​(Weifang) Biological Engineering Co., Ltd., Oriental Veterinary Medicine Co., Ltd., Xiamen Pude Biotechnology Co. Company, Yangzhou Haicheng Biotechnology Co., Ltd., Cangzhou City CITIC Biotechnology Co., Ltd., Guangzhou Lvhui Biotechnology Co., Ltd., etc.) actinomycetes, lactic acid bacteria, heat-resistant bacillus group, lactic acid bacteria group, bifidobacterium The strains of colony, photosynthetic flora, actinomycetes and photosynthetic bacteria are cultured at a high density, and first inoculated into a shake flask containing 25-35% of medium by volume for activation and cultivation. The formulation of the activated medium Glucose 18-22g/L, peptone 12-18g/L, sodium chloride 3-7g/L and beef extract 0.2-0.8g/L, cultured at a culture temperature of 36-39℃, and a flask rotating speed of 180-220rpm. -32h. The cultured strains are inoculated into a fermentation tank containing a fermentation medium with a volume ratio of 50-60%, and the volume inoculation amount is 1-2%, and the fermentation is expanded and the fermentation medium has a formula of corn flour. 10-15g/L, glucose 3-8g/L, soybean meal powder 18-22g/L, fish meal 3-8g/L, calcium carbonate 5-9g/L, ammonium sulfate 0.8-1.2g/L, dipotassium hydrogen phosphate 0.1 -0.5g/L, magnesium sulfate 0.1-0.3g/L and manganese sulfate 0.1-0.3g/L, cultured at 36-40℃, fermenter stirring speed 200-220rpm for 20-32h, bacteria in fermenter The content of ≥108 pcs/ml. The various single bacteria obtained by the expanded culture are dehydrated and dried to prepare a dormant microbial dry powder, and then according to 20-30 parts of actinomycetes, 20-25 parts of lactic acid bacteria, 10-25 parts of heat-resistant bacillus group, and 10- 25 parts of lactic acid bacteria group. 20 parts, 8-15 parts of bifidobacteria, 20-25 parts of photosynthetic bacteria, 20-30 parts of actinomycetes, and 10-25 parts of photosynthetic bacteria.

[0035] Soft rot fungi, brown rot fungi, and white rot fungi were collected from the forests in the mountainous area of ​​Tianjin. The fungus-bearing wood blocks and fruit bodies were collected and then cultivated. The main raw materials for cultivation were wood chips and cotton seed husks of broad-leaved trees, which were dried after harvest. Soft rot fungi, brown rot fungi and white rot fungi are used in a weight ratio of 80-100 parts.

[0036] Yeast flora and yeast are commercially available, and they are used in a weight ratio of 10-20 parts and 20-30 parts, respectively.