At present, the precocious potatoes in the arch sheds of Longde County have entered the growth stage of seedling stage. In order to achieve the objective of high and stable yield, the following points should be noted in the management of potato seedlings in early-maturing sheds:
First, depending on the situation, timely filling and weeding
If the soil moisture before sowing is good, it is not easy to water, and when water reaches Miao Qi, Miao Quan and Miao Zhuang, it should be timely filled with water and supplemented with water. Irrigation should not be flooded with water, and within a week after flooding, sheds should be ploughed and weeded between ridges and furrows.
Second, as the temperature inside the shed timely ventilation
The seedling stage of potato in greenhouse is the period when stems and leaves grow most vigorously. The length and width of leaves increase rapidly, the leaf area index increases, the photosynthesis increases, and the roots, stems and leaves grow rapidly. When the side winds are small, the side vents are alternated every 3 to 5 days to facilitate the balanced growth of the potato in the shed, and the lamination lines are pressed in time to prevent the wind from being released when the crosswind is released.
Third, to prevent plant growth, should be timely removal of plastic film
In the middle of May, as the temperature rises, the temperature of the ground rises and the temperature of the ground film rises. When the local temperature exceeds 18°C, the mulch or membrane cover should be removed in time to prevent the plants from becoming overly long. , to promote its underground hair growth.
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