In the early stage of solar greenhouse (about 1 week), half of the grass is pulled up, a small amount of light is let in, and the temperature is gradually increased, so that the peach trees move slowly, which is beneficial to the balanced metabolism of various hormones and nutrients. 1 week later, open all straw mats and fully see the light. The indoor temperature should be kept at 10-25℃ during the day, not lower than 5℃ at night, and the ground temperature should be 15-20℃. The optimum temperature for germination is 5-28℃. Generally, it opens at 8: 00 in the morning and opens at 16: 00 in the afternoon.
At this time, the plastic greenhouse should do a good job of heat preservation, because the temperature in the middle and late June of 65438+ 10 is very low and it is easy to snow. The cold resistance of buds after germination and growth is extremely low, and chilling injury will occur when the temperature is lower than 0℃. In the case of cold current, warm air and hot blast stove can be used for auxiliary heating if possible. The relative humidity of air from shed to germination should be kept at about 80%, and the flowering period should be controlled at 50%-60%.
Extended data
The growth period of peach is about 240d, so it is necessary to apply sufficient base fertilizer and topdressing to improve yield and quality. Young trees are planted with fertilizer in the spring of 1 year, then topdressing 1 time, and then topdressing 1 time every 20 days, and applying available nitrogen and phosphorus fertilizer combined with organic fertilizer. Urea 10~25g/ plant, calcium superphosphate 10g/ plant and organic fertilizer 5~ 10 kg/ plant were applied each time. With the expansion of the crown, the amount of fertilization also increased gradually.
Stop topdressing at the beginning of July, and control the vigorous growth of branches, which is beneficial to flower formation. Fertilizer application in autumn in late September 1 time (mainly organic fertilizer). Fertilize 1 time in late February, early May, late July and late September of the following year, and apply nitrogen, phosphorus and potassium in combination. Apply 22.5~30 t of organic fertilizer, 600 kg of urea, 750 kg of calcium superphosphate and 0/50 kg of potassium sulfate per hectare every year.
Winter peach enters the high-yield period in the third year after planting, can be fertilized three times a year, and adhere to the principle of combining long-term fertilizer with quick-acting fertilizer, organic fertilizer with inorganic fertilizer, and use it reasonably. In late February, fertilizer 1 was applied, and germination fertilizer, mainly quick-acting nitrogen fertilizer, was applied, with 450 kilograms of urea and 22.5 tons of human and animal manure per hectare.
The second time, in late May, strong fruit fertilizer was applied, organic fertilizer, nitrogen fertilizer and potassium fertilizer were combined with phosphorus fertilizer, and 45t organic fertilizer (human and animal manure), 750kg urea, 300kg potassium sulfate and 450kg calcium superphosphate were applied per hectare. The third time, fruit fertilizer was applied in late September. Combined application of organic fertilizer and nitrogen and phosphorus fertilizer, 22.5t of organic fertilizer (human and animal manure), 225kg of urea and 750kg of calcium superphosphate were applied per hectare.
Baidu Encyclopedia-Winter Peach
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