What are the advantages of straw bioreactor technology? How to apply? Straw bioreactor technology generally has three methods: built-in, inter-row and external. Let's take a look at the following.
(1) Built-in straw reactor technology
There are several technical links such as ditching, stalking, planting, covering soil, watering, drilling and planting.
1. Types of straw: mainly straw stalks, corn stalks and wheat straws are preferred, and bean stalks, sunflower stalks, straw, edible fungi, etc. can also be selected.
2. Ditching: Ditching in the north-south direction of the greenhouse, the length is the same as that of the cultivated carp, the groove width is 50cm, the depth is 30cm, and the center distance between the ditch and the ditch is 120-150cm (specifically adjusted according to the planting crop).
3. Laying straw: covered with straw (dry straw) in the opened ditch, the thickness is about 30 cm, and the straw is 10~15 cm at each end of the ditch, which is convenient for irrigation, heat dissipation and ventilation. The amount of straw used per mu of greenhouse is about 4000kg.
4. Saccharomyces: After the straw is paved, the special microbial strains are sprinkled according to the ratio of bacteria to straw 1:400. The dosage of each strain is about 10kg (the different methods and dosages of different strains are used according to the special bacteria). Kind of instructions for use). The specific method is to level the ground when the straw is filled in the depth of the semi-ditch, sprinkle 1/3 of the strain, and then continue to fill the straw, when the leveling is level with the ground, sprinkle the remaining 2/3 strains, and sprinkle each acre. 8-10 kg of urea to accelerate the decomposition of straw and culture microorganisms.
5. Covering soil: Backfill the soil on both sides of the ditch on the straw, and cover the soil with a thickness of not less than 30 cm and leveling. Combine the cover soil, apply the base fertilizer, and then water.
6. Watering: Watering once, it is better to wet the straw. After 3 to 4 days, the ridge surface is leveled, the thickness of the soil layer on the straw is kept at about 30 cm, and the film is punctured.
7, punching: on the ridge with 12 # steel (usually 80 ~ 100 cm long, and welded a T-shaped handle at the top) three rows of holes, line spacing 25 ~ 30 cm, hole distance 20 cm, hole penetration to penetrate The straw layer shall prevail.
8. Colonization: Plants are planted after the straw has been decomposed by microorganisms for 15 days. Other planting management is carried out as usual.
(2) Built-in straw reactor technology between rows
Its operating procedures are basically built-in under the peers. In the ditch, the excavation depth is 30 to 40 cm, the width is 50 to 60 cm, and the straw is placed, and the straw is exposed at 10 cm on both ends. Spread the mixed bacteria evenly, slap them with the iron shovel, fill the soil with straw, water, and take the wet straw as the standard. According to the row spacing of 30 cm, the hole spacing is 20 cm, and punching with 12# steel bar, the hole depth is based on the penetration of the straw layer.
(3) External straw bioreactor
Use a storage tank or a fermentation ditch in the greenhouse to make a simple reactor. One side of the pool or ditch is used as a base for the carbon dioxide exchange, and a liquid take-up pool is made in the middle. The pool or ditch is made of wooden sticks, cement rods and iron wire to make a fixed grid. The top is covered with 40cm thick straw, sprinkled with strains, and continuously operated for 3 layers. After that, the water is drenched and the membrane is moisturized. After the start of the pumping cycle, oxygen is supplied to supply the carbon dioxide required by the plant.
The above is all about today's straw bioreactor technology, you can consider learning according to your own situation!
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