Test guidelines for cleanrooms Shanghai
In order to achieve a certain standard o.......
Answer: In winter, there are many pests of fruit trees that overwinter in the soil, such as peach fruit borer, Zao step and so on. To do this, before the earth is frozen, the soil under the trees is turned over (25 to 35 cm deep) so that the wintering pests in the soil can be frozen out or.......
The cultivation of rapeseed direct seeding can simplify the production of rapeseed, and is suitable for rice rinsing and early drought irrigation in the whole province before mid-October. It is in line with the production development trend to promote live rapeseed according to local condit.......
Solution: This is Sclerotinia Sclerotinia. In addition to pests, the disease can also occur on onions, onions, garlic and other crops, often resulting in the drying up of large areas of plant leaves, leaving only the heart.
First, the symptoms: The main damage to the leaves and sta.......
Recently, weak cold air has affected the north in a wide range, and this winter has already arrived. After entering the winter, you will encounter cold currents, rain and snow. In this case, it is also a period of complicated management of greenhouses. Farmers should st.......
The glutinous rice, also known as glutinous rice, is sticky and slippery. It is a must-have for festival food at the time of the holiday. Even the Lantern Festival of the fifteenth month is made of glutinous rice flour. Glutinous rice is rich in B
At present, greenhouse vegetables are in the late stage of nursery, some of them have entered the transplanting period, weather forecast, a recent low temperature weather, is not conducive to late management and transplant management of melon vegetable seedlings, and now the management mea.......
Symptoms: The appearance of the flower ball is purple or purple yellow. The normal physiological function of the plant is destroyed, metabolic function is disordered, and the anthocyanin in the body is transformed more, so that the flower bulb appears purple.
Prevention: In daily p.......