Phassua Butler Lepidoptera Distribution of Liaoning, Jilin, Heilongjiang, Hunan, Anhui and other provinces.
Host forsythia, cloves, ginkgo, Schisandra, hawthorn and other medicinal plants and fruit trees, trees and so on.
The larvae are damaged…
The scientific name is Lema (Microlema) decempunctata Gebler is a Coleoptera, leaf armor family. Alias ​​ten point leaf A, dilute honey. Distributed in Inner Mongolia, Ningxia, Gansu, Qinghai, Xinjiang, Beijing, Hebei, Shanxi, Shaanxi, Shandong, …
First, prepare before broadcast
1. Variety selection Anti-disease varieties, high ridge cultivation. The currently well-tolerated varieties include Beijing New No. 3, Fengkang 80, and Taiyuan Erqing.
2. For scientific manure, the nitrogen requirement is greatest in the grow…
Scientific name Acanthiophilus helianthi Rossi Diptera, Tephritidae. The common name is buds and borers. Distribution of Inner Mongolia, Ningxia, Xinjiang, Jilin, Shanxi, Hebei, Henan, Jiangsu, Beijing and other places.
The hosts include safflower, atractylodes macrocephala, milk t…
Small pill machine use precautions
1. This machine is suitable for ambient temperature of -5 ° C to 40 ° C, relative humidity less than 90%. There is no conductive dust and corrosive metal gas around, and it is plac…
Trace elements play an important role in the growth and development of wheat, which can not be replaced by a large number of elements (such as nitrogen, phosphorus, potassium, etc.). Scientifically increasing trace element fertilizers is an important technical measure for the high and stab…
90% of the province's soil lacks boron, of which more than 70% of the area is seriously deficient in boron. The application of boron to crops has become an important technical measure in agricultural production. The new-type boron fertilizers, such as B-rich quick-acting boron fertiliz…
In the winter and spring cold seasons when applying nitrogen fertilizer to crops, ammonium bicarbonate is the best choice. Since ammonium bicarbonate is applied to farmland, it can be directly absorbed and utilized by crops without conversion, and nitrogen can be supplied in time to increa…
In the early spring, the courgettes of the greenhouse are prone to fruit enlargement, yellowing and wilting, and finally they are dry-like symptoms, commonly known as melons, which may appear before and after flowering.
First, the reasons for melon (a) in early spring zucchini leaf…
Nitrogen fertilizers commonly used in agricultural production include ammonium sulfate, ammonium chloride, ammonium bicarbonate, ammonia, liquid ammonia, ammonium nitrate, calcium ammonium nitrate, and urea. Studies have shown that, under field conditions, the nitrogen fertilizers absorbed…
Nitrogen fertilizers commonly used in agricultural production include ammonium sulfate, ammonium chloride, ammonium bicarbonate, ammonia, liquid ammonia, ammonium nitrate, calcium ammonium nitrate, and urea. Studies have shown that, under field conditions, the nitrogen fertilizers absorbed…
Question: According to the farmers, many soil problems appear in vegetable fields. What are the main performances?
Answer: Soil deterioration in vegetable fields is essentially a management problem. The main aspects are the following: First, soil compaction. The second is serious s…