The use of segmental wood cultivation of black fungus has a history of more than 300 years in China, but over the years, in addition to the purification, rejuvenation and replacement of strains, it relies mainly on natural production and lacks scientific management.
In response to this situation, the soil fertility of Xiangfan City, Hubei Province, was carried out in the black fungus production areas of Baokang, Nanxun and Gucheng, and the effects of applying NPK, micro-fertilizer, hormones and plant growth regulators on black fungus were studied. , achieved good results. The technical options are as follows:
1. What kind of nutrition is better? What is the effect?
(1) According to the results of 6 points test, phosphorus and potassium have obvious effects on promoting the growth of black fungus, and nitrogen has better effect only when it is properly combined with phosphorus and potassium. When combined with 1% superphosphate and 0.5% potassium sulfate, not only can the yield increase, but also the total amount of amino acids and the contents of the eight essential amino acids increase, the crude fat content decreases, and the quality is improved.
(2) According to the test results of 4 points, it is shown that the iron and boron have the best yield increase among the six micro-elements tested. In addition, among the various plant hormones and plant growth regulators, triacontanol and a-naphthylacetic acid are better, and triacontanol and a-naphthylacetic acid can not only increase the yield of black fungus by about 30%, but also make black fungus. Quality improved and matured 2-3 days in advance.
In summary, in order to make high quality and high yield of black fungus, it must be supplemented with appropriate amount and proportion of nitrogen, phosphorus, potassium and other elements, as well as trace elements such as iron, boron, zinc, etc., supplemented by the application of triacontanol, a - Naphthalene acetic acid and other hormones and regulators.
2. How to add nutrients to black fungus?
(1) Select the better fertilizers, hormones, and regulators, and master the application concentration. A large amount of elemental fertilizer can be applied with 1% superphosphate and 0.5% potassium sulfate, or 0.2% ammonium sulfate, 1% calcium superphosphate and 0.5% potassium sulfate; the trace element fertilizer can be 0.02%-0.04 ferrous sulfate or Borax; hormones and plant growth regulators may be selected from 0.3% to 0.5% PPM triacontanol and 5PPMa-naphthalene acetic acid. A large number of elemental fertilizers, trace element fertilizers, hormones and plant growth regulators can be administered in combination when economic conditions permit.
(2) Master the application method and application technique. Fertilize or spray hormones and plant growth regulators to black fungus, usually in the early stages of young ears. In early spring and late autumn, the temperature is relatively low, and it can be sprayed at noon; in summer, the temperature is higher, sunny days should be sprayed after 4 pm, and cloudy days can be sprayed all day. The selected fertilizer, hormone and plant growth regulator are dissolved in warm water before spraying and formulated into the desired concentration and placed in the sprayer. One person sprays the fertilizer in front, and one person turns the rod behind. It is required to spray the front and back of the ear rod evenly and spray it until dripping.
In case of drought, the drought will be started in the afternoon of the second day after spraying (direct spraying or pouring water), and stopping for 5 days after continuous drought for 5 days (generally, if the temperature is suitable, the ear can be closed once), if it does not rain Continue to fight drought until the ear is closed. If it does not rain for a long time, the ear can be covered with branches, straw, etc. during the day to resist drought, and the cover is uncovered at night to maintain suitable temperature and humidity conditions. If it does not rain for 6 hours after spraying, it will rain if it is raining. Once the ear is closed, it should be sprayed once, and combined with other management measures such as weed removal, bacteria removal, disease prevention and pest control to ensure the harvest of black fungus.
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