1, the effect is not obvious.
Reason one: the quality of the strains used is inferior.
Solution: buy high-quality strains, don't listen to the manufacturers, and specialize in bacteria. Because microbial fertilizer products need to be registered in the Ministry of Agriculture before they can be produced and sold, it is recommended to buy strain products with microbial fertilizer registration marks, such as Fengnong straw reactor strains. Some products have achieved good results in a short time, but because the strains used have not been tested by the Microbial Fertilizer Registration Department of the Ministry of Agriculture, there are some reasons such as unstable product quality and unsafe use, so it is recommended to buy and use them carefully.
Reason 2: The ratio of carbon to nitrogen has not been adjusted.
Solution: Adjust the C/N ratio with 15 kg urea or 200 kg soybean meal per mu. The specific operation method is as follows: after sowing, evenly sprinkle urea or soybean meal on the straw. You can also mix the strain with soybean powder and apply it. Do not mix urea and bacteria.
Reason 3: Insufficient drilling or hole plugging.
Solution: Increase the punching density. Generally, it can be carried out as follows: during planting, drill a hole 5 cm away from the root of crop seedlings and before, after, left and right; During the growth period, holes can be punched evenly in a square of 25 ~ 30 cm; Punch 20 cm square in the fruiting period. Generally, eggplant crops can be drilled four times a season, and leafy vegetables can be drilled twice.
2. The white bug crawled out after punching.
Reason: There is corn borer in the corn stalk. After the stalk is harvested, the corn borer sleeps in the stalk. When the straw reactor is watered and perforated, the temperature rises, and the corn borer breaks the dormancy and climbs out of the hole.
Solution: only spray pesticides, not fungicides.
3. The plant is yellowish in color, with thin stems and thin leaves.
Reason: Because urea was not added to adjust the C/N ratio when the straw reactor was built, microorganisms and plants competed for nitrogen in the process of straw decomposition, resulting in nitrogen deficiency and loss of green crops.
Solution: apply nitrogen fertilizer.
4. The leaves in the lower part of the plant turn yellow.
Reason: it is convenient to apply nitrogen fertilizer, and the fertilizer is poured directly into the pit. Because there are several kinds of microorganisms in the stomata, the high temperature leads to the decomposition of nitrogen fertilizer into ammonia overflow, which leads to fumigation of the lower leaves.
Solution: firstly, exhaust air to reduce indoor ammonia concentration; Secondly, water should be used to reduce the concentration of fertilizer; Thirdly, foliar spraying 1% vinegar solution can effectively reduce the harm.
5, the condition is more serious than before use.
Reason: No special strains were used or under-used or inferior strains were used. Because the straw itself carries germs, if the strains are not used properly, the germs carried by the straw will spread in the shed and produce new diseases.
Solution: use straw reactor strain products registered by the Ministry of Agriculture; Use corresponding fungicides for foliar spraying to avoid root irrigation.