Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the organic planting method of dendrobium devonianum, which has the advantages of good water and fertilizer absorption, less plant diseases and insect pests, high fertilizer efficiency and good quality.
An organic planting method of dendrobium devonianum comprises the following steps:
A. soil preparation
Removing weeds and crop stalks on the planting field, disinfecting and sterilizing by using quick lime or potassium permanganate, and killing a disease insect source;
B. preparation of culture substrate
Mixing pine bark, wood shavings, decomposed sheep manure, crushed charcoal and bagasse in a weight ratio of 4:2:1.5:1.5:1, placing the mixture in a sterilization chamber for sterilization, cooling after sterilization, and then placing the mixture in a fermentation chamber for fermentation to obtain a culture medium;
C. building planting shed
Building a planting shed on the arranged planting ground, wherein the height of the shed roof is 2.1 meters, the height of the shed shoulder is 1.2 meters, the width of the shed is 6 meters, the length of the shed is not more than 30 meters, the shed roof is sequentially covered with a plastic non-drip film, a movable sunshade net and a fixed sunshade net, insect-proof nets are arranged around the planting shed, and matched irrigation facilities are arranged in the shed;
D. build planting bed
Paving wood processing and edging waste into a planting bed with the height of 60-80 cm and the width of 100-120 cm in a planting shed, paving a planting medium with the thickness of 5-10 cm on the planting bed, and then managing the moisture in the soil according to the row spacing of 20 cm;
E. transplanting
Selecting high-quality dendrobium devonianum seedlings with developed root systems and no disease or insect pests, and fixedly planting the seedlings on the moisture of the soil according to the plant spacing of 10-15 cm, wherein the seedlings between the moisture of the soil and the moisture of the soil are fixedly planted in a staggered mode;
F. fertilizer management
And (3) soaking charcoal, decomposed sheep manure, fermented bagasse and quicklime in the biogas slurry for one month, and mixing according to the weight ratio of 3:3.5:3:0.5 to obtain the base fertilizer for dendrobium. Planting the dendrobium devonianum seedlings for 15-30 days at a dose of 0.15-0.20 kg/m2Applying a dendrobe base fertilizer, and then applying a biogas slurry diluent with the volume concentration of 25% on the dendrobe base fertilizer every 20-30 days, wherein the number of times of watering in the growth period is 4 in total;
G. pest control
2/3 beer is filled into an open container with the height of 5cm and the width of 10cm to form the pest trapping and killing device. And planting the dendrobium seedlings for 15-30 days, placing a pest trapping and killing device every 50cm along the direction of the moisture in the soil, and cleaning the pests in the pest trapping and killing device every 24 hours.
Preferably, the dosage of the quicklime in the step A is 0.25-0.5 kg/m2The concentration of the potassium permanganate is 800 times, and the dosage is 0.06kg/m2。
Preferably, in the step B, the sterilization temperature is 100-120 ℃, the sterilization time is 30min, the fermentation temperature is 30 ℃, and the fermentation time is 24 h.
Preferably, the insect-proof net in the step C is 40 meshes.
Preferably, the additional application amount of the biogas slurry diluent in the step F is 160-200 g/m2。
According to the organic planting method of the purple dendrobium, organic substrates and fertilizers are adopted, so that the development of the root system of the purple dendrobium can be promoted, the nutrient absorption of the root system is good, pests are trapped and killed in advance, and the growth development of the purple dendrobium is promoted, and the yield and the quality of the purple dendrobium are improved. Meanwhile, the method reduces the planting cost of the dendrobium devonianum, avoids the influence of chemical fertilizer application on the quality of the dendrobium devonianum, reduces the disease and insect pest incidence rate, and effectively improves the quality of bed-type cultivated dendrobium devonianum.
Examples
Selecting an environment suitable for planting the dendrobium devonianum: subtropical and cool and humid areas with the altitude of 1400-1800 m; the relative humidity is 70-80%; the air is fresh and moist, and no toxic and harmful gas pollution exists; the best irrigation water is spring water, and the water quality of tap water and the like meets the GB5084 regulation. The average annual temperature is 12-21 ℃, the extreme highest temperature is not more than 32 ℃, the extreme lowest temperature is not less than 0 ℃, and the frost-free period is 200-300 d/y; the annual rainfall is 1400-2100 mm, the rain is less in winter and the drought is dry, and the high temperature and the high humidity are more in summer; the shading degree is 60-80%, and the illumination intensity is 3500-4000 Lux.
In the area meeting the ecological environment, the sunny slope land, the low-yield farmland and the terrace land with sufficient illumination and water sources in the morning to the sun or the north and south are selected, and the negative slope land and the concave land are not suitable to be selected. The planting field is selected to be more than 500m away from the main traffic road, the ecological environment is good, the pollution influence is avoided, or the pollution source is limited and controlled within an allowable range. An obvious mark is set in the producing area of the dendrobium devonianum, the range is marked, and antifouling warning is given.
After the cultivation land is selected, removing weeds, crop stalks and the like on the ground according to the proportion of 0.25-0.5 kg/m2Sterilizing with common quicklime or potassium permanganate solution of 800 times at a ratio of 0.06kg/m2The dosage of the pesticide is sprayed to kill the source of the pests.
40% of pine bark: 20% of wood shavings: 15% of decomposed sheep manure: 15% of crushed charcoal: mixing 10% of bagasse in a weight ratio, sterilizing in a sterilization chamber at 100-120 ℃ for 30min, and fermenting the sterilized materials in a fermentation chamber at 30 ℃ for 24h to obtain the culture medium.
A simple small arched shed with the width of 6m, the length of no more than 30m, the height of shed shoulder of 1.2m and the height of shed roof of 2.1m is built, the shed roof is covered with a plastic non-dropping film and a layer of sunshade net (movable and shading degree of 70%), a layer of sunshade net (fixed and shading degree of 70%) is additionally covered on the shed roof, 40-mesh insect-proof nets are installed at the periphery and the inlet, irrigation facilities are installed in the shed in a matching way, and an automatic or manual control spraying system (preferably, the simple small arched shed can spray water, fertilizer and pesticide) is installed conditionally.
The planting bed is built by using the bark waste materials processed by wood in the shed, the bed height is 60-80 cm, the bed width is 100-120 cm, and the bed length is determined according to the land. 5-10 cm of cultivation medium is paved on the planting bed, and soil moisture with the height of 3-5 cm is formed according to the row spacing of 20 cm.
And selecting high-quality and high-yield dendrobium devoninum paxt tissue culture or cuttage seedlings which are pure in seed source, strong in growth, developed in root system and free of diseases and insect pests 3-5 months per year. Planting the seedlings on the moisture of the soil according to the planting distance of 10-15 cm, wherein the moisture of the soil and the inter-planting seedlings of the moisture of the soil form triangular dislocation, and the stem base is 2-3 cm away from the matrix.
By adjusting the movable sunshade net of the planting shed, 60-80% of shading degree or 10-12 h of scattered light in the planting shed is avoided from direct insolation or long-term shade. After the dendrobium devonianum is planted, a humid environment is kept, the temperature in the greenhouse is controlled to be 14-28 ℃, the humidity is controlled to be 70-80%, the temperature of a planting bed is controlled to be 25 +/-2 ℃, and the water holding capacity of a culture medium is about 30%. Water supplement can be carried out by combining with additional fertilizer, but excessive watering is not suitable, water accumulation and root rot are avoided, and spray watering can be carried out in the morning and at night or under high temperature, low temperature or sunshine insolation if drought occurs.
And soaking the charcoal in biogas slurry for one month, and mixing the charcoal, decomposed sheep manure, fermented bagasse and quicklime according to the weight ratio of 3:3.5:3:0.5 to obtain the base fertilizer for the dendrobium. After field planting, according to the growth vigor of the dendrobium seedlings, the dendrobium devonianum seedlings are field-planted for about 15-30 days according to the weight of 0.15-0.20 kg/m2Applying the dendrobium basic fertilizer, and then diluting the biogas slurry with the volume concentration of 25% according to the proportion of 160-200 g/m every 20-30 days2The fertilizer is applied on the base fertilizer of the dendrobium, and the number of times of watering in the growth period is 4 times in total.
During the growth process of the dendrobium devonianum, weeding is carried out according to the principle of 'removing early and removing small', and timely weeding can also reduce the occurrence of plant diseases and insect pests. The pest and disease damage is mainly prevented, prevention and control are combined, the purple dendrobium is transplanted for 15-30 days, open containers are arranged every 50cm along the trend of soil moisture, 2/3 beer is filled in the open containers to trap and kill pests, and the pests in the open containers are cleaned every 24 hours.
Comparative example 1
Compared with the embodiment, the method is characterized in that the dendrobium devonianum is planted for about 15-30 days, the dendrobium devonianum base fertilizer is not applied, and the dendrobium devonianum base fertilizer is directly applied according to the proportion of 160-200 g/m2The amount of the additive is 25 percent of biogas slurry diluent by volume concentration. The other cultivation management levels are completely the same.
Comparative example 2
Compared with the examples, the difference is that the formula of the culture medium is 50% of pine bark, 30% of wood shavings and 20% of bagasse, and the rest culture management levels are completely the same.
Comparative example 3
Compared with the implementation, the difference is that 1, the formula of the culture medium comprises 50% of pine bark, 30% of wood shavings and 20% of bagasse; 2. planting dendrobium devoninum paxt for about 15-30 days, directly using 160-200 g/m of dendrobium devoninum paxt base fertilizer without applying dendrobium devoninum paxt base fertilizer2The amount of the additive is 25 percent of biogas slurry diluent by volume concentration. The other cultivation management levels are completely the same.
The agronomic characters, disease resistance, growth period, yield and quality of Dendrobium devonianum of examples and comparative examples 1-3 were measured, and the results of the measurement and comparison are shown in tables 1-5.
TABLE 1 influence of different treatment modes on the agronomic traits of Dendrobium devonianum
TABLE 2 Effect of different treatments on the disease resistance of Violet
TABLE 3 influence of different treatment modes on the growth period of Dendrobium devonianum
TABLE 4 influence of different treatment methods on the yield of Dendrobium devoninum Paxt
TABLE 5 influence of different treatment methods on the quality of Dendrobium devoninum Paxt
As can be seen from the comparison of the indexes, the purple dendrobium of the comparison example 3 has slower development and relatively weak field growth, and the indexes of the dendrobium plant such as germination number, plant height, pitch, stem thickness and the like are all lower than those of other treatments; the disease resistance index, yield index, polysaccharide and mannitol were all lower than those of the example and the control example 1 using the culture medium of dendrobe of the present invention, and the growth time was also shorter than that of the example and the control example 1 using the culture medium of dendrobe of the present invention.
Dendrobium devonianum is a crop which is sensitive to the reaction of fertilizers and matrixes and needs to strictly control the absorption process of nutrients and moisture. In the cultivation of the dendrobium, whether the fertilizer application mode is reasonable or not directly influences the exertion of the fertilizer efficiency, the absorption of the root system to nutrients, the growth amount of dendrobium plants and the accumulation of dry matters. According to the organic planting method of the dendrobium devonianum, the cultivation medium and the fertilizer management method are beneficial to effective respiration of the root system of the dendrobium devonianum and enable the root system of the dendrobium devonianum not to accumulate water easily, so that root rot and other diseases are reduced, the growth period of the dendrobium devonianum is improved, exertion of fertilizer efficiency, absorption of the root system to nutrients, growth amount and dry matter accumulation of the dendrobium devonianum can be promoted to the maximum extent, and growth and development of dendrobium devonianum and yield and quality of the dendrobium devonianum are promoted.
Meanwhile, the organic planting method of the dendrobium devoninum paxt disclosed by the invention has the advantages that the cost of a planting house is reduced, the influence of chemical fertilizer and pesticide on the quality of the dendrobium devoninum paxt is reduced, the morbidity of plant diseases and insect pests is reduced, and the quality of the dendrobium devoninum paxt cultivated in a bed mode is effectively improved. The organic planting method can be used for bed cultivation and living tree bionic cultivation.