Prevention and treatment of element deficiency of cut rose in production
When there is a lack of nutrient elements, the main reasons for the lack of nutrient elements are as follows: the difference or error of effective components in fertilizer is not consistent with the actual amount of fertilizer; the improper operation of fertilizer and fertilization results in precipitation and loss, which makes the proportion of nutrient elements out of balance; soil pH value, soil temperature and poor permeability affect the effectiveness of nutrient elements, so that rose can not effectively absorb nutrients. Therefore, in soil cultivation, as long as we adhere to normal fertilization, it is generally not easy to lack large and medium elements, sometimes due to the rapid growth of rose, consuming a lot of fertilizer and water, and not applying fertilizer in time, which can be solved by increasing the frequency and amount of fertilizer supply. It is easy to lack trace elements such as iron, manganese, boron, calcium and magnesium. When lack of iron or manganese, besides increasing the amount of iron or manganese fertilizer, it is more important to adjust the pH value of the soil so that the pH value is between 5.5 and 6.5, so as to improve the activity of iron or manganese. 0.2%-0.5% chelated iron or manganese can be foliar sprayed at the same time for severe deficiency; boric acid and calcium nitrate can be used for foliar spraying for severe deficiency, while boric acid and calcium nitrate can be used for foliar spraying when boron, calcium and magnesium are deficient; the occurrence of cord deficiency symptoms can be reduced by applying a large amount of mature farm fertilizer combined with soil improvement. After the occurrence of nutrient deficiency symptoms, the nutrient elements need to be adjusted for 2-3 weeks or even longer. During the adjustment period, soil detection and leaf color changes are needed to observe the changes of leaf color. After the plant returns to normal growth, it will return to normal fertilizer and water management.
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Management measures of different seasons in the production of cut rose
(1) Winter: it is mainly sunny, the light is strong, and the temperature difference between day and night is large. There will be a short period of extremely low temperature at the end of December. There is a large temperature difference between day and night in southern Jiangxi, which is good for the dry matter accumulation of cut rose flowers, which have large heads, many petals and bright colors. However, the temperature difference between day and night in the greenhouse in winter is often more than 20 ℃, and the temperature difference between day and night is too large, which will lead to blackening of petal edges and flower deformities in many cut rose varieties. The lowest night temperature for the growth of cut rose is more than 8 ℃. Too low night temperature is not conducive to the growth of cut rose, which mainly affects germination and sprouting.
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How to cultivate open field perfume rose
Perfume rose is a plant of the genus Rosa, which is suitable to grow in an environment with plenty of sunshine and air circulation. It is not strict with the soil, but attention should be paid to the following links in open field cultivation. First, the cultivation area. Perfume rose is a light-loving plant. In the process of cultivation, you should choose sunny ground and avoid planting in the shady side of tall buildings, trees and hillsides. The ideal soil for cultivating perfume rose should have good aggregate structure and rich content of organic matter. Perfume rose does not require high soil acidity and alkalinity, on the soil with a pH value of 5.5 to 8.0.
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