Identification of Diseases of Edible Fungi and Fine cultivation of broccoli in Autumn

First, sowing and raising seedlings. Soak the seeds before sowing, cultivate the seedbed carefully, cuddle and rake flat, with a thickness of 6-8 cm. The seedbed was watered before sowing, and then covered with 0.5 cm thick nutritious soil. After sowing, a new high-fat film was sprayed in time to improve the seedling emergence rate. Cover with sunshade net for 3-4 days, uncover the seedlings after emergence, or use other shading objects to cover the sun, so as to achieve seven points of yin and three points of yang.

Second, planting. Autumn broccoli planting, the temperature is still high, should be carried out in the evening, and sufficient planting water. The suitable period is three leaves directly under the seedbed, and 5-6 true leaves are used for seedling transplanting. After transplanting, spraying new high-fat film can effectively prevent aboveground water from evaporation, seedling water from transpiration, cut off diseases and insect pests, shorten slow seedling period, quickly adapt to the new environment and grow healthily.

Third, field management. The drought and waterlogging tolerance of broccoli is poor, it needs a lot of water during the growth period, but the water requirement is relatively strict, and it is often required to keep the soil dry and wet in cultivation. In the early growth stage of broccoli, it is mainly to grow leaves to expand the assimilation area and to produce and accumulate nutrients for the generation of reproductive organs. During the whole growing period, nitrogen nutrients should be supplied, especially during the vigorous growth period of rosette leaves. In the process of flower bud differentiation and flower head development, it is necessary to apply more phosphorus and potassium fertilizer. During topdressing, foliar spraying should be carried out with the combination of extra-root topdressing and irrigation topdressing. Fertilization combined with the use of photosynthetic nutrient film fertilizer (light fertilizer) to enhance the photosynthetic capacity of nutrients and chlorophyll, advanced environment-friendly plants to increase fertilizer, yield, color, leaf thickening, stem strong compound film. It can help plants absorb a lot of light fertilizer, light energy, light, compatible conventional fertilizers and nutrients to the limit of plant growth and development. One application is beneficial for the whole year. It should be ploughed and weeded 2-3 times.

Fourth, prevent diseases and insect pests. The main diseases harmful to broccoli are soft rot, sclerotiorum and black rot. Mainly focus on prevention, the implementation of crop rotation, and timely use of ecological agents plant cellular immune factors to enhance plant stress resistance, can make virus DNA break and apoptosis. Strong immune function, induce interferon and active interleukin, inhibit residual virus replication, and promote plant positive energy ecological growth. The mechanism of host plant disease resistance and the principle of pathogen toxicity variation were used to control the reproduction of plant physiological diseases and infectious diseases.