How to plant the latest Eucommia seed?

Eucommia ulmoides is endemic to China, with high cultivation value, like warm and humid climate and sunny environment, can withstand severe cold, and adults can survive normally under the condition of-30 ℃. Eucommia ulmoides is cultivated in most areas of our country with strong adaptability and no strict choice of soil, but it is most suitable for deep, loose, fertile, moist and well-drained loam. Let's take a look at how Eucommia seeds are planted.

Seed treatment

The life span of Eucommia ulmoides seeds is 1 year, and the seed germination rate is closely related to maturity and freshness. the germination rate of mature seeds is low, and the germination rate of spring sowing is even lower. It is usually harvested at the end of October, hung and stored, soaked in clean water for 1-2 days in late December, changed the water once a day, and added less copper sulfate or ammonium benzoate (zinc) and carbendazim in the last change of water, so as to kill germs and filter them so that they can spread without sticking hands when sowing, and sow seeds directly into the border.

Sow seeds into the border

1. Soil preparation and fertilization: the seedlings of Eucommia ulmoides should be cultivated in Shatian or sandy soil fields, ploughing and raking repeatedly for 2 or 3 times before sowing. The compound fertilizer "stubble" before the last ploughing and harrowing. Make a 1-meter border, cut 20-25 cm deep, apply ring fertilizer or sprinkle compound fertilizer and vegetable cake in the ditch, or use human and animal urine feces to make the bottom, covering soil 1.5-2 cm below the border surface.

2. Sowing into the bed: the seeds of Eucommia ulmoides were scattered evenly or sparsely and evenly between 5 cm in the ditch where the basic fertilizer was applied, and those who were too dense picked up another sparse place. Cover vegetation ash mixed with soil or fine soil 1.5 cm. Along the ditch on the border, the rice and thatch are kept warm. The cover grass does not need to be too thick, so as not to bring out the seedlings when lifting the grass.

Seedling stage management

The main results are as follows: 1. suitable time seedlings: Eucommia ulmoides seedlings which are too dense are transplanted separately, so that the plant spacing is about 8cm. It is better to transplant the seedlings before opening the true leaves, and there is almost no root in the roots without the true leaves. Gently pick out the hard bamboo (with mud as much as possible) in cloudy days or evening, plant with one handful, water after planting, and fertilize once with extremely light human urine feces or urea point after 7-10 days.

2. Spraying to protect seedlings: Eucommia ulmoides should be sprayed to control locusts, gibberries, longicorn beetles and other pests during the whole seedling stage. Bordeaux liquid can prevent blight, but it is useless to spray Bordeaux liquid after the seedlings get blight, so Kangkuling and carbendazim should be irrigated. At the same time, it is necessary to hoe the surface shallowly to increase the ground temperature and irrigate more light fertilizer to enhance soil fertility. Downy mildew can be sprayed or irrigated with mancozeb, mancozeb and carbendazim.

3. Pulling grass and loosening soil: after emergence, Eucommia ulmoides seeds should pay attention to ploughing and weeding, watering and fertilizing, and loosening the soil. Seedlings avoid the scorching sun, should be properly shaded, sprinkler irrigation should be timely to prevent drought in the dry season, and attention should be paid to waterlogging in the rainy season. If the trunk of the seedling is bent, it can remove all the aboveground parts along the surface in early spring, promote the development of new branches, and leave a strong and straight new branch as the new trunk, and all the rest can be removed.

4. Rational fertilization: Eucommia ulmoides seedling fertilization should be "eat less and eat more", farm manure and compound fertilizer should be better, fertilization should be light, thinning after each loosening soil is appropriate, ammonium bicarbonate should not be used to prevent fertilizer damage. After the seedling height is 30 centimeters, you can spread urea on rainy days, with a dosage of 4-5 kg per mu. After the seedling height is 40 cm, urea can be sprinkled lightly every 15-20 days. Eucommia ulmoides seedlings grow sharply in autumn, fertilizer to keep up, the big one can grow 100 to 110 centimeters high, can cultivate high-quality seedlings.