The universal testing machine control system is a system that controls the operation of the testing machine. The computer can be used to control the operation of the test machine, and the status of the test machine and various test parameters can be obtained through the co

1 Ecological characteristics of pecans a. The soil is required to be deep and fertile, like a warm and humid climate, is a semi-positive plant, and adapts to a soil pH between 5.5-7.0. b. The reproduction of hickory trees is mainly based on sowing and seed

Wheat kernels culture medium Soak the wheat kernels in warm water for 2 hours, remove them and put them in a bamboo sieve, and pour them with clean water every 4 hours. After about 24 hours, when the wheat grains sprout 0.50 cm long small buds, put them in

In order to make the spring shoots grow and stop early, one week after flowering, that is, in late April, the orchard should be hydrated in time, because the flowering and budding of fruit trees consume a lot of water and nutrients, so enter the orchard in

Recently, Xi'an Institute of Optics and Mechanics of the Chinese Academy of Sciences announced the successful development of a femtosecond laser high-precision processing equipment that can be used for industrial preparation of cardiac stents. This new device can realize high-qua

This summer, many rainstorms hit the country, and there are still floods in many places. For the production of fruit trees, waterlogging will cause yellow leaves, rotten roots, poor differentiation of flower buds, and rapid infection of pathogens. Fruit f

The fertilizer and water management of cucumbers in greenhouses in winter is very important. If the fertilizer and water management are not properly managed, it will cause bad phenomena such as rotten roots, retting roots, and yellowing leaves. For this re

Before and after the rain, it is the best season for ginger planting in the north. Doing a good job of preparations before planting is conducive to achieving a bumper harvest. The following introduces the preparation work that should be done before sowing

Since lettuce has a shallow root system, it should be planted in a soil with good drainage, fertility, water retention, and fertilizer retention. Use 4000~5000 kilograms of decomposed compost and human and livestock manure per mu, and 50 kilograms of compo

What is the most effective winter diet? 1, pumpkin Pumpkin is rich in vitamins and pectin, pectin has a strong adsorption, can bind and eliminate bacterial toxins and other harmful substances in the body, play a detoxification effect. The ingredients contained in the pumpkin can promote bile sec

The main existing problem of black fungus sawdust bag planting is mold contamination. This is because the earphone lacks a protective layer like the bark of a piece of wood, like the cortex of a mushroom tube, and therefore, it will cause germ infection. I

Pour up the jointing fertilizer Topdressing with nitrogen fertilizer in the wheat rise and jointing stage can not only increase the protein content, but also increase the yield of wheat. Therefore, it is necessary to water the rise and jointing fertilizer