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 Posted: Sun 20:46, 13 Feb 2011 Post subject: moncler uomo Apricot greenhouse cultivation techni |
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Apricot greenhouse cultivation techniques
Horticultural Company, Golmud, Qinghai 8160002 Hebei Academy of Agricultural Sciences, Institute of Dryland Agriculture, Hebei Hengshui 053OOO) Abstract: The growth and development of lettuce in different stages of the temperature requirements are different, optimum growth temperature for the seedling stage l2-20 ℃, ability of a 6 ℃ low temperature, adult plant resistance is poor, the growth temperature for 1l ~ l8 ℃, the temperature difference between day and night can reduce the intensity of respiration, is conducive to stem stout,[link widoczny dla zalogowanych], fat, high yield,[link widoczny dla zalogowanych], if the average temperature in this period above 24 ℃,[link widoczny dla zalogowanych], the respiration intensity, consumption of nutrients and more easily leggy plants, Cuangao, bolting, resulting in production. Qaidam Basin, with its cool summer climate characteristics into the unique-season lettuce cultivation base. Keywords: lettuce; Qaidam Basin;-season; cultivation techniques a variety of options as a long history of cultivation of lettuce, variety, the large difference among varieties, according to the climatic characteristics of the Qaidam Basin and the history of lettuce planting, Golmud from the skin Qaidam Basin, particularly suitable for growing lettuce. Golmud lettuce stem diameter thin, fleshy green, crisp, juicy, excellent flavor, in the domestic market have a higher visibility, the majority of consumers. 2 seed treatment on seed 【= constant temperature water 556oa stirring 15min, until the water temperature dropped to around 30 ℃, the hand rub to the seed coat of mucus, after the seed directly into ice water, soak 6h, then remove wrapped with a damp cloth placed l8 ~ 20 ℃ 24h under the conditions of germination can be sown. Every kind of lettuce is about 667m2 with a minimum temperature of 5 ℃, humidity below 80%; flowering suitable for temperature control in the l2 ~ l8 ℃, the lowest temperature 7cI =, humidity less than 60%; flowering temperature should not exceed 22 ℃. Young fruit of optimum temperature l5-20 ℃, the minimum temperature 8 ℃, relative humidity less than 70%: enlargement of the optimum temperature 18 ~ 25 ℃, the lowest temperature of l0 ℃, humidity of less than 70%, nearly ripe stage optimum temperature 2230 ℃, minimum temperature 15, humidity is less than 6o%. 2 weeks after the follow-warming film, help the soil to raise soil temperature. 4.2 fat pipe to basal fertilizer 4.2.1 mainly carp, the best fruit picking immediately after fertilization, is conducive to the accumulation of tree nutrition. After the leaves should not be fertilizer. Basic fertilizer, organic fertilizer as well. Mainly inorganic fertilizer topdressing. Fertilizer to meet the needs of all sectors, timely fertilizer. Before budding, flowers prior to the available nitrogen-based; fruit enlargement of the chase fertilizer; pick fruit trees after strong with a small amount of fertilizer may be appropriate. Foliar fertilization is a good fertilization, can be 10 ~ 15d1 times. 4.2.2 General water before pouring in the Koupeng 1 of water, later, as the moisture may be, fruit enlargement of the water pouring 1. Before maturity, they do not particularly dry. Without water, to prevent cracking. After watering in the short term studio humidity, must be promptly Moisture. 4.3 Management 4.3.1 fruit flower pollination pollination ,8-11 can be carried out and spend granted by the brush head. Whole-tree blossom scroll with the feather duster, pollination, with good results. Areas where conditions permit may also be pollinated by bees or wasps wall. 4.3.2 Spray hormone to promote flowering fruit sprayed 300 times 500 times the borax plus urea, 2 weeks after flowering spray 25mg / l gibberellic acid (GA3) plus 0.30% potassium dihydrogen phosphate and glucose, and 300 times the anti- fall coloring agents, in order to improve fruit set. 4.3.3 Artificial thinning thinning can be divided into 2 times. 1st thinning to be completed within 2 weeks after flowering, fruiting branches to the base of a small fruit thinning, deformed fruit, and fruit, worms, fruit. 2nd thinning in the hard core of the general left a bouquet-like fruit branches and fruit, fruit branch short stay 1 to 2 fruit, fruit branch to stay in the 3 to 4 fruit, fruit branch length of stay in 6-8 results. 4.4.1 Xiajian trim the main Maya 4.4, topping,[link widoczny dla zalogowanych], thinning, picking leaves, fruit picking or heavy retraction after the thinning. When the flower buds after germination, erase the wrong parts of the shoots of Health; when the new shoots 20-25em timely topping, when the 2 when the new shoots grow to 20em pinching or Thinning. Around the backbone of branch length to 50em, should be open-angle bending branch, part of the shoot were ringing, twisted tip handle, shoot and Wang back in time Thinning dense branches, to open the light path to increase the light for flower buds. When nearly mature fruit, leaf removal around the fruit and promote fruit coloring. After picking fruit, thinning the interlaced into 1 × 2 spacing on retention trees, thinning to the drooping branches, retraction of the results of branches, branch stubs backbone, trigger the shoot, the results for the coming year. 4.4.2 Thinning winter pruning is still the principle of non-squid, worms, sticks,[link widoczny dla zalogowanych], cross sticks. Overlapping branches, drooping branches, by 1 × 2 spacing, each tree in the left long fruit branch to 6080. 4.5 In addition to pest control and 1 week after the spray temperature 1 3. Lime sulfur, but later, as the case, the use of pesticides to control pests and diseases reasonable. m is 0 Agricultural Science and Technology 5 live
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