What is the reason for the yellowing of the top of pomelo?
What is the reason for the yellowing of the top of pomelo? Please introduce the yellowing of the top tip of pomelo (not the whole plant). The symptoms may be: 1. Insufficient supply of soil fertility, or imbalance of nitrogen, phosphorus, potassium application ratio, resulting in insufficient supply of tree nutrients. two。 The insufficient supply of micro-fertilizer leads to the hindrance of top growth, such as zinc, magnesium, iron and so on. 3. The root activity of honey pomelo is insufficient due to root rot, especially in the case of drought, overcast and rain, low temperature and low-lying land. In view of the above reasons, it is suggested to take the following remedial measures: 1. Foliar spraying functional nutrient solution, such as "love more harvest", humic acid foliar fertilizer. two。 It is the deficiency disease that should be foliar sprayed with the missing micronutrient fertilizer 2 or 3 times. Combined with all kinds of hole expansion and soil improvement and fertilization, magnesium, zinc and other medium and micro fertilizers can be applied together. 3. Foliar application of plant growth regulators. For example, brassinolide is sprayed for about 3 times. 4. Try to eliminate the disadvantageous factors in the orchard. The construction of irrigation facilities should be strengthened in mountain orchards and drainage facilities should be strengthened in low-lying areas to reduce impregnation. 5. Pay attention to the application of farm manure and organic fertilizer and strengthen soil improvement measures to make the overall soil fertility meet the growth needs of grapefruit. When tip yellowing occurs, it is caused by lack of fertilizer, and the application of organic liquid fertilizer (both root irrigation and some functional nutrient solution, such as amino acid and humic acid liquid fertilizer) can be taken. Click to get more pomelo planting techniques click to get more fruit planting techniques
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How to plant grapefruit trees?
How to plant grapefruit trees? Please guide the grapefruit planting method can refer to the following methods: first, the requirements and selection of orchard requires good soil structure and physical properties, deep and fertile soil layer, good drainage, air permeability and water retention; the groundwater level is low and will not be waterlogged in the rainy season; the content of humus in the cultivated layer of the land should be high.
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How to manage red meat honey pomelo in June?
How to manage red meat honey pomelo in June? Please guide that June is the concentrated period of plum flood season, with a lot of precipitation, strong intensity and relatively concentrated, which is easy to cause flood and waterlogging disasters. At the same time, it is also an important time for the management of red flesh honey pomelo. The management methods can be referred to as follows: (1) the second physiological fruit drop period that begins in mid-late May.
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