Fertilization techniques of edible fungi and cultivation of broccoli (double balls) in greenhouse

First, variety selection: it has achieved success in excellent, Luxiong 90 and other varieties.

Second, sowing ahead of time: due to the growth standstill caused by coring, the harvest time may be delayed by 8-10 days. This requires sowing about 6 days in advance before it can be harvested at the same time.

Third, coring method: in order not to affect growth, apply thin fertilizer once 3 days before coring, applying 45% compound fertilizer 0.5 kg for every 15 ha of seedbed. In the seedling stage, the heart was picked out when 4 true leaves were removed, 2 true leaves were left, 2 lateral branches were cultivated in each seedling, and 2 bouquets were formed in each plant after transplantation. Coring should be carried out on a sunny day to prevent infection; according to the size of the seedling, coring should be carried out in batches. Other seedling management techniques are the same as conventional.

Fourth, and de-cute: in order to ensure the development of double balls, the sprouts before the middle stage of growth must be removed in time. The seedling bed was de-germinated once before planting, once at 15 days and 30 days after planting.

5. Planting density: under the condition of double-ball treatment, with the increase of density, the weight of single ball decreased greatly, the diameter of flower ball became smaller, and the thickness of flower ball became thinner. Under the density of 2200 plants, the single ball became very small and basically lost its commerciality. The suitable planting density of double bulbs is 1800 plants per 1ha.

6. Fertilizer and water management: under the condition of double-ball treatment, it is necessary to increase the amount of fertilizer application by about 20% compared with ordinary cultivation, which can promote good growth and development. Other fertilizer and water management is the same as routine.

7. The effect of increasing yield: in general, the double ball rate can reach more than 90%, with an increase of 700 flowers per 15 hectares of fresh-keeping flowers. The growth rate is about 80%, at the same time, the color of the bouquet is better and the shape is round, which is suitable for fresh export.

8. application prospect: double-ball cultivation increases a certain labor cost in the two links of coring and de-sprouting, and increases a certain amount of fertilizer application at the same time, but can save a certain amount of seeds. The total cost of every 15 hectare production field increases by about 50 yuan, but the economic benefit can be increased by more than 600 yuan, and the input-output ratio reaches 1 ∶ 1.2, so it has very significant economic significance. However, for the big flower bulb harvested, the total yield did not increase significantly under the experimental conditions, and whether it has economic value needs to be further studied.