The latest course of planting techniques and methods of Toona sinensis sprouts

Toona sinensis is a cultivated species of neem trees fed with tender stems and leaves, which is called "vegetable on the tree". It is rich in vitamins and a variety of essential trace elements for human body. it has high medical and health care function, delicious taste and is deeply loved by people. in the production of Toona sinensis sprouts, there are three kinds of sprouts: seed sprouts, seedling vegetables and body sprouts. Let's take a look at the planting techniques of Toona sinensis sprouts.

Toona sinensis seed sprout

1. Seed treatment: it is best to choose Toona sinensis seed, which has high seed germination rate and good seedling quality. The fresh Toona sinensis seeds were soaked in clean water for 5 hours for 6 hours, disinfected with 0.01% potassium permanganate solution for 15 minutes, and then continued to soak in clean water, during which the seeds were washed twice with 20-25 ℃ warm water until the seeds were swollen by water, and then dry water was controlled. Wrap the seeds in 3 layers of clean wet cloth and put them in a container to block the light and accelerate germination. Rinse once or twice a day with warm water of 20: 25 ℃ during germination. Generally, the seeds can be sown after 4-8 days of exposure.

2. timely sowing: spread a layer of papyrus or non-woven cloth or gauze in the sterilized seedling plate, then spread 2.5 cm thick perlite, sow the budding seeds on it, sowing about 150 grams per plate, and cover the seeds with 1.5 cm thick perlite after sowing. Finally, spray it with 20-25 ℃ warm water and put it on the cultivation rack.

3. Post-sowing management: spray 20-25 ℃ warm water twice every morning and evening after sowing, keep the air relative humidity at about 80%, and avoid excessive water holding capacity of the substrate or stagnant water in the tray. In the first three days after sowing, the temperature was controlled at 20: 25 ℃ in the daytime and kept at 12: 15 ℃ at night. After the shoots were arched out of the substrate, the seedlings were controlled at 18: 23 ℃ in the daytime. The growth rate was slower when the temperature was low, but accelerated when the temperature was high, the quality decreased, and the Lignification was easy. Generally 12-14 days, the bud length is 5-7 cm, the cotyledons have not yet expanded, the bud is stout, white and tender, and the root tip is not yellowed when harvested.

Young vegetable of Toona sinensis

Toona sinensis seedling vegetable is an edible seedling of Toona sinensis which is obtained by continuing to see light on the basis of cultivating Toona sinensis seed sprout. Toona sinensis seed sprouts grow to strong yellow and tender, and when the cotyledons are fully unfolded, they can continue to see light and green growth. Toona sinensis seedlings grow well under the condition of weak light and scattered light, which can be regulated by sunshade net according to weather conditions. Before harvest, according to the seedling color up and down the plate, generally see light 2-3 days later, seedlings grow to more than 10 cm, cotyledons fully unfolded, true leaves exposed, not yet Lignification before harvest on the market.

Toona sinensis sprout

Toona sinensis sprout is the tender bud sheath of Toona sinensis, commonly known as Toona sinensis bud, its production process is to cultivate Toona sinensis plant. The branches, iniquities and roots of Toona sinensis can be used to propagate, but the propagation coefficient is small, the uniformity of seedlings is poor, and seeds are generally used in production.

1. Seed sowing: select fertile, loose and sunny plots as nursery land, apply sufficient bottom fertilizer and water before sowing, and prepare the land in time when the land is dry. In the whole fine rake flat seedbed, trench is opened according to 20 cm row spacing, ditch depth 2 cm 4 cm, groove width 6 cm 8 cm, sow seeds evenly in the ditch, 3 cm with one seed is appropriate. Use 2-3 kg of seeds per mu.

2. Seedling management: after sowing, Toona sinensis seeds are covered with 1cm thick fine soil and finally covered with plastic film. The seedlings began to emerge in 7 days. When the seedlings began to arch the soil, they should break the membrane and release the seedlings in time. When the seedlings had 2 true leaves, they should be combined with ploughing and loosening the soil, time seedlings and weeding. Strengthen the management of water and fertilizer after interseedling and cultivate strong seedlings.

3. Timely planting: the planting period of Toona sinensis is from defoliation in winter to sprouting in early spring, about 3000 trees per mu, interplanting green manure between rows, and then turning it into fertilizer. The seedlings used in greenhouse for warm winter are usually transplanted after defoliation in autumn and the daily average temperature is 3: 5 ℃. The seedlings are planted densely and about 6000 plants per mu. Watering in time after planting.

4. Field management: topdressing is carried out in the sprouting shoot growth period, once for each harvest, and watering in time for drought. In order to sprout early, 0.01% gibberellin can be used to spray buds to break dormancy. After harvesting 2 times for 3 times, dwarfing treatment was carried out in mid-July. 15% paclobutrazol 200 × 400 solution was used from mid-late July, spraying once every 10-15 days for 3 times, so as to control overgrowth, early cap dwarfing and increase dry matter accumulation.

5. Plant adjustment: Toona sinensis cultivated in protected area should carry out plant adjustment, topping and promoting branching. The seedlings just transplanted into the greenhouse will not be topped temporarily, because the nutrients stored in the xylem can provide a crop of Toona sinensis to grow, let it out of the first crop of Toona sinensis, improve the utilization rate, and promote photosynthesis in the rapid growth. When the second crop of Toona sinensis was picked, the top was topped and dried, and then paclobutrazol was sprayed once.

6. Bagging optimization: in order to improve the quality, the buds of Toona sinensis can be covered with a black-and-red polyethylene film bag for light insulation when the bud grows to about 5 cm, and when it reaches 15 cm, it can be removed with the bag. The outer bag can be used repeatedly.

7. Timely harvest: when the buds of Toona sinensis grow to 15 cm and 20 cm, the basal 1-2 leaves should be retained to facilitate lateral bud germination. It can be harvested 2 or 3 times in open field and 3 times in protected land.