Problems in topdressing kiwifruit

Kiwifruit has a very large planting area in China, and it is a kind of fruit loved by many people. When we are growing kiwifruit, topdressing is very important. Reasonable topdressing is the main measure to meet the nutritional requirements of kiwifruit growth. However, there are many people who have some problems when chasing fat. Today, the editor brings you the problems of kiwifruit topdressing. Let's take a look at it.

1. It is difficult to grasp the time of topdressing.

Many fruit growers do not fully understand the physiological characteristics of kiwifruit when planting kiwifruit. Therefore, it is impossible to meet the demand for nitrogen, phosphorus, potassium and other fertilizers in different growth periods of kiwifruit. For example, it is impossible to determine the time when sprouting fertilizer, fruit expansion fertilizer or even base fertilizer is used. Some people apply large amounts of available fertilizers in late autumn and early winter. At this time, the root system of kiwifruit trees has gradually stopped growing, resulting in waste of fertilizer and pollution of the soil.

2. Discomfort in the amount of topdressing.

When we apply fertilizer, we should reasonably determine the amount of fertilizer according to the tree potential of kiwifruit trees. Many people ignore this point, for example, in the budding period, a large amount of ammonia bicarbonate is applied, and the dosage reaches more than 5 jin per tree. Some people also apply excessive fertilizers such as diamine and superphosphate after the fruit is harvested. If there is too much phosphate fertilizer, it will fix zinc in the soil, resulting in slow growth of fruit trees in the second year and a variety of physiological diseases.

3. Uneven proportion of nutrition.

Uneven proportion of nutrients in fertilizers is also a major problem. When many people are fertilizing, they apply whatever fertilizer they have. For example, some urea, ammonium bicarbonate and so on are used as main fertilizers, without collocation, a large number of elements are used all the year round, ignoring the absorption of trace elements, resulting in a decline in fertilizer efficiency. With the increase of tree age and yield, trace elements are becoming more and more important to the growth of kiwifruit trees. Many people still only know how to apply a large number of elements such as nitrogen, phosphorus and potassium, resulting in detailed cold and drought resistance of fruit trees, affecting yield and quality.

4. Do not understand the function of fertilizer varieties

At present, there are many kinds of fertilizers on the market, especially chemical fertilizers. There are dozens of simple chemical fertilizers, organic fertilizers and so on, as well as various organic and inorganic fertilizers, microbial fertilizers and trace elements. However, when some people buy fertilizer, they only pay attention to the price, regardless of the proportion of nutrients in the fertilizer. Do not understand the nutritional needs of fruit trees, just want to be cheap, resulting in poor growth of kiwifruit.

5. Do not pay attention to foliar fertilizer

The root system of kiwifruit is affected by soil and fertilizer during its growth. The absorption pressure is also relatively large, so we should also pay attention to the application of foliar fertilizer. Foliar fertilizer can supplement kiwifruit with fast nutrition and high utilization rate. Especially in the fruit expansion period, it can effectively share the pressure of root nutrition absorption. While many people do not know the type, time and concentration of foliar fertilizer, they simply do not apply foliar fertilizer, which is absolutely not allowed.

The above is a brief introduction to the problems existing in the topdressing of kiwifruit. That's all for today's introduction. This article is for reference only. I hope it can help you all.