The cultivation and cultivation techniques of Taxus chinensis

1. The seedbed is ready to be surrounded by bricks. The bed is 1.2m wide and 20cm high. The bed is filled with perlite and filled with water to make it fully inflated. In the north, because the temperature is lower, the trees sprout later than in the south, and the growth period is shorter than in the south. Where there are conditions, it is better to prepare a greenhouse with adjustable temperature and humidity control. In the south, shade can be set directly on the nursery. The shed is about 2m high.
2, cuttings trimming According to the length of the branches will be divided into three levels of spikes, I level above 16cm, II grade 10-15cm, III grade 5-9cm. Combine 50 sticks of each same level into bundles and place them in shade.
3, cuttings inserted 1-2d before cutting, with 2 ‰ -3 ‰ potassium permanganate solution evenly through the seedbed. When the cutting is done, if the seedbed is relatively dry, the seedbed will be soaked (in order to hold the seedling tight). Before plugging in, put the 3-5cm base of the bundle into the metallurgy solution of 3‰-4‰, and then pick it up with the preparation of the rooting powder. The cutting depth was 1/3-1/2 of the length of the cuttings, and the spacing of the rows was 3-4cm6-7cm.
4, management
4.1 Fertilizer management Alternate spraying of 0.2% urea and 0.2% potassium dihydrogen phosphate (ie 50kg of water plus 0.1kg or 1 sprayer water plus 32g) from May 1 onwards, with an interval of 7-10d, can be combined with spraying. Fertilization Notes: (1) Spray on the foliage. (2) Urea must first be dissolved with a small amount of water before dilution. (3) In case of rain, the fertilization time will be postponed, but the interval between the two shall not be less than 7 days. When the sun is too big, there will be no fertilization. Normally it will be performed before 11:00 am or 4:00 pm.
4.2 Moisture management From the time of cutting to the end of July (except for rainy days), spray twice a day on sunny days (8:00-11:00 am, 3:00-6:00 pm) and once a day on cloudy days (at 2:00 pm) -6:00). It is advisable that the seedling leaves of the seedlings be moist but not drip. Foliar spraying day without water, if the next day is cloudy nor spray, then spray sunny 1 (pm 3: 00-6: 00).
1. The nursery prepares to excavate the nursery at the end of last year and disinfects it with a 1 ‰ -3‰ potassium permanganate solution. At the beginning of February, the nursery bed is used. The bed width is 1.2m, the groove width is 30cm, and the ditch depth is 20-25cm. Seedbed formation required, finely divided loose soil groups. Before making the bed, dig a drainage ditch according to the direction of the mountain slope and the direction of the water flow.
2, seedlings before transplanting process to deal with the root seedlings were treated pulp. Treatment method: ABT rooting powder is formulated into a 50mg/kg solution, carbendazim is added in a ratio of 3%, mixed thoroughly with the solution, then clay (15%-20% by weight) is added, and the solution is formulated into a low concentration slurry . Before planting, root the seedlings in the mud and plant them.
3, planting row spacing: I grade seedlings 15cm20cm, 20cm30cm, II, III seedlings 8-10cm15cm. When planting, small trenches should be planted and the planting depth should be 1/3-1/2 of the seedling height. It is required that “Miao Zhenggen is comfortable and moderately elastic”. The depth of planting seedlings in autumn is more than 1/2, and the tightness of seedlings is strictly required. Root water should be poured immediately after planting.
4, management
4.1 Fertilizer root fertilizer: (1) Apply 10% of defecation water on April 20th and April 30th; (2) Apply 20% defecation water and 0.5% urea on May 15th and May 30th; ( 3) On June 15, June 30, July 15 and July 30, apply 30% of manure and 0.5% urea. Leaf fertilizer: Spraying 0.2% urea and 0.2% potassium dihydrogen phosphate (ie 50kg plus 0.1kg or 1 sprayer water plus 32g) alternately from May 1st, spraying once every 7-10d.
4.2 Water The moisture requirements of the seedlings of Mandshuea yew are more stringent. The soil must be kept moist to facilitate the growth of seedlings. However, excessive water will cause the roots of seedlings to rot. Therefore, reasonable drainage ditch should be planned in the low-lying areas. In areas with drought or water shortages, moisture should be added in a timely manner.
4.3 Forest management measures Weeding and weeding can also be carried out in combination with root fertilizers. May-September is the peak season for the growth of weeds, depending on the growth of weeds to determine a reasonable number of weeding and time, the general principle is to remove early, except small, except. When weeding can not damage seedlings, and will be skewed, lodging seedlings cultivated. After loose soil weeding, the rooting water shall be poured in time. While weeding the soil, we should clean up and clear the drainage ditch.
4.4 Pest control Preventive application of methyl 1605, dichlormic or methamidophos in 1 to 5 months, using the method of reference with the product manual; Continuous infusion of carbendazim or dixone in the late April to early May (interval The period is 10d). If a disease has occurred, it should be applied promptly. The use of pesticides should pay attention to the safety of people, animals, and seedlings. Dead plants should be removed promptly.
1. Afforestation sites include the slopes in the middle and lower parts of the slopes, slopes, grooves, shady slopes or half shades and half shades, slopes less than 35, soil pH values ​​of 4.5-7.0, deep and fertile soil, moist soil and good drainage. The land of the earth, the light or the soil is used as a reforestation land. Artificial young forests with a canopy density of less than 0.4 can also be used as afforestation sites. The return of cultivated land to forest land is due to the flat terrain and the cultivation of agricultural crops for many years. The pests and diseases are serious. Before the afforestation, the soil should be sterilized and a reasonable part should be selected to dig the drainage ditch.
2, the entire zone shape, burrow, squat soil preparation or total scorpion. The size of the hole is 40cm40cm30cm, and the row spacing is 80cm80cm, 60cm60cm, 60cm100cm (Yokoyama Yokoyama). Areas with flat topography and high soil fertility should adopt strips, rafts, or soil preparations for high density; barren lands should be used for soil preparation and low density. Afforestation under young forests is based on the degree of canopy closure and the distribution of forest trees. Hole-like land preparation is used in forest hollows.
3. At the same time as the basal preparation, the type and application amount of the basal fertilizer should be determined according to the soil conditions of the forestation site. In general, 250g of calcium phosphate is applied to each hole, and manure and livestock manure can be added in areas where conditions permit. Fertilization method: After digging a hole or trench to a suitable size and depth, backfill the topsoil to 1/3-1/2 of the depth of the hole, apply the base fertilizer and mix it evenly, and finally backfill the topsoil to make the hole appear bow-shaped or ditch uplift. shape.
4, planting planting time is generally in the spring of 2-4 months, autumn 9-11 months. Before planting seedlings, dip the roots of the seedlings in a 50 ml/kg ABT rooting powder slurry solution, dig open the backfilled pits or furrows, plant the seedlings in the holes, backfill 10-15cm, raise the seedlings, and stretch the seedling roots. , Hold the seedlings in the lower part of the hand, use the solid four-pronged foot, and then back to the right position and nurse the seedlings. Immediately after the planting root water.
5, management 5-6 months and August-September each caress 1 times, July knife care 1 times. Place weeds and stones under the seedlings or on the edge of the table. When caressing, the seedlings should be earth-cultivated and expanded, so that the afforestation sites of burrow-shaped soil preparation can be connected into strips or ribbons as far as possible.
You can apply fertilizer in the middle or late April. Afforestation with two-year-old seedlings, with 0.5% of the urea agent, combined with fertilization after weeding; seedlings more than 3 years old, directly applied 50-100g / point of urea. In the future, superphosphate 250g/hole is added every one year. The method is to dig a 10-15cm wide and 5-10cm deep annular groove at the vertical projection of the canopy, apply the urea uniformly into the ditch, and then cover the soil and fill it.

Large Starch Separator Machine

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