Spring broccoli cultivation techniques

The cultivation of broccoli in the open season in the spring, although its growth and development are in the season when the temperature is getting higher and the pests and diseases are getting heavy. However, as long as we grasp the following five key technologies in cultivation, we can achieve high yield and high efficiency, and we can meet market demand.

1, timely sowing. Spring planting of cauliflower in open field can be used for strong resistance to diseases, high temperature resistance, compact and neat green black, green Tokyo and other varieties. The middle and lower reaches of the Yangtze River will be planted in small arch sheds between late March and early April. About 15 grams per mu will be planted. Seeding beds will be 7-8 square meters. After sowing, they will cover 1 cm of finely screened fine soil. Sprinkle water every morning and evening. Seedlings are divided once when the seedlings have 2 to 3 leaves, and transplanted when they are 5 to 6 leaves.

2, age colonization. At the time of colonization, when the seedling age was 25 to 30 days, there were 5 to 6 true leaves and stout stems with well-developed roots, strong seedling-free seedling colonization, and pouring of sufficient root water. The next day, they were poured with live water. Plant spacing is 40 to 4550 cm, and about 3000 plants are planted in acres.

3, scientific training. Planting 10 days or so of topdressing 10 kg of urea as the seedling fertilizer, about 20 days of the plant enters the vigorous growth period topdressing compound fertilizer 20 kg as promoting long-term fertilizer; Lei budding topdressing 15 kg of urea as bud fertilizer. At the same time, 0,3% of boron fertilizer and 0,05-0,1% ammonium cupreate were sprayed on the leaves twice. After the main flower bulbs are collected, the top dressing watering promotes the development of lateral flowers, which requires pouring “three waters”. One is pouring enough water to set the roots, and the other is 4 to 5 days of pouring 1000 kg of manure water for green seedlings. Pouring budding water, watering in time when the main flower bulb grows to 3-6 cm. In case of rainy weather, timely clearing of the ditch. At the same time, we must also do a good job of “three catches”. First, we should do a good job of cultivating the cultivating soil and carry out cultivating and properly cultivating the soil when the saplings are irrigated for 3 to 4 days. The second is to grasp the buds and only collect the main flower bulbs. The early emergence of collateral buds should be erased by hand. The third is to grasp the pruning, harvest the side of the seedlings 4 to 5 lateral branches, the remaining side branches destroyed.

4, disease prevention and pest control. Cauliflower is mainly caused by three diseases, namely, black spot, downy mildew, black rot, cabbage caterpillar, and diamondback moth. The control of melasma can be used 3% more itching clear 600 ~ 1000 times liquid or 4% agricultural anti-120 water agent 1200 ~ 1500 times liquid; control black rot can be used 72% agricultural streptomycin 200 mg/kg plus 10% superphosphate Leachate or control with neomycin and 100 mg / kg; control of downy mildew can be used 600 or 800 times Trickle or green treasure; control cabbage Pieris, Plutella xylostella can be used "Bugworm" virus B type 800 ~ 1500 Doubling or killing of Bacillus sp. 100 ~ 150 g watered 30 ~ 50 kg spray control effect is quite good.

5, timely harvest. The broccoli harvesting period is relatively short and must be timely harvested. The general harvesting standard is full growth of the flower ball, green color, spherical slightly concave, tight buds, solid flower ball. Harvesting too early will affect yield and should be dehydrated in the morning and harvested. The base of the flower bulb is cut with a knife and the stem is 7 cm long, and the lateral flower bulb is with a 7-10 cm tender stem. Broccoli is not resistant to storage and transportation, and is packaged or sold in time after harvesting. It must be shockproof and pressure-proof during transportation.

Brief Introduction:

High temperature Dental Zirconia Sintering Furnace HTS1800 is mainly used for the sintering of zirconia materials and also can be used in the field of powder metallurgical for the high temperature sintering and annealing of the materials. The main features are as below:
1.Quick Zirconia Sintering crystallizing time

2.Simple English touch screen control panel 

3.Various programmed curve setting available

4.Exclusive elements to avoid zirconia discoloration

5.Compact muffle chamber with auto lift and drop tray


Zirconia Sintering Furnace

Zirconia Furnace,Nabertherm Sintering Furnace,Dental Zirconia Sintering Furnace,Zirconia Sintering Furnace For Sale

Shandong Carved Intelligent Technology Group Co.,Ltd , https://www.demetdent.com