Introduction Perfluoro compound (of PFCs) or perfluoroalkyl surfactant (PFAS) is a man-made chemicals, often used in the past half century surfactants, flame retardants, non-stick cookware coatings and coating the paper wrapper. 1, 2 Because of its low degradation, perfluorinated compounds have re
Read moreScientific storage, suitable for planting Winter jujube seedlings should be planted after the leaves fall after autumn and when the local winter jujube buds germinate in spring. Good soil management When planting new gardens in rotation fields, make fu
Read moreRelease date: 2018-03-30 Latest discoveries and innovations On the 29th, "Cell" published a research paper by the team of Chinese Academy of Engineering and the president of Nankai University, Cao Xuetao, and introduced the team to discover a new subpopulation of red blood cell-like
Read moreConsultation: I bought the phosphate fertilizer, I feel the quality is wrong, how to easily identify? Answer: First, identify from the packaging 1. Check the mark. The product name, nutrient content, grade, trademark, net weight, standard code, factory
Read moreIn recent years, with the advancement of the concept of precision medicine, the application of genetic testing technology in commercial or medical science is highly respected. It is like giving a detailed specification to the human body, telling you in detail where you are tal
Read moreask: May I ask how to trim and reshape Elm plum? Trim and reshape: The most commonly used tree shape of Ulm plum is "natural and happy shape". After the graft survives, when the seedlings grow to more than 1 meter, cut them off at about 65 cm
Read moreAs far as greenhouse vegetables are concerned in autumn and winter, no matter whether they are watered for fertilizer, or hanging branches and mulching, they should not be rushed. After all, any farming operation must grasp the opportunity well in order to
Read moreTo make peach trees have high yield and good quality, the following fertilization techniques should be mastered when fertilizing. Early fertilization Peach trees are the earliest fruit trees in the fruit trees in spring. Fertilization in spring should b
Read moreYellow is also a kind of amaranth, except that the yellow is yellow and the amaranth is green. Although the taste is not much different, the yellow is more expensive than the amaranth. The main reason is that the glutinous rice is produced by softening an
Read moreNormally, wheat begins to tiller about half a month after the wheat shoots have grown. At this time, the root system of wheat grows slowly, and effective tillers appear mainly from the stem nodes of the above-ground wheat. These ears will be headed in the
Read moreCabbage is also called cabbage, lotus white, rutabaga and so on. In recent years, more and more vegetable farmers have begun to cultivate cabbage off-season through protected areas. The cabbage planted in this way has fewer pests and good quality, and vege
Read more1. Deep cultivation and soil improvement. The soil quality of the new vegetable field is generally poor. The tilled layer is only about 15 cm. When it is changed to a vegetable field, due to the increase in the number of planting stubble and the large con
Read more