When using and maintaining the engine water pump must pay attention to the following points: When properly installed and installed, the gears of the gear-driven water pump should be closely integrated with the transmission gear, and the belt-driven water pump should ensure that the coaxiality .......

(A) The main reasons for falling flowers and falling fruit 1. Warming prematurely Solar greenhouse cultivation must meet the amount of cold required to break the dormancy before it can grow and develop normally. However, some growers, in order to mention the morning, did not break the dormancy.......

In Atractylodes macrocephala, the quality of wild atractylodes macrocephala is much better than that of cultivated products, so it is classified as a single species. However, because wild Atractylodes resources are very few, cultivation of Atractylodes Rhizome has become the mainstream of comm.......

V. Precision Variable Irrigation Equipment

Figure 20-21 shows precise variable irrigation equipment. In the large-scale dry fields, the use of large-scale sprinkler irrigation equipment can save a lot of water compared to flood irrigation, and save labor and time. The amount of water .......

First, stocking ready to choose fresh water, sunny, rich aquatic plants, snails more water areas, where there are few plants can be artificially planted or part of the water plants to make up, so that the river crab can get enough animal and vegetable food, is conducive to meet And promote the.......

White spot disease seriously harms cruciferous vegetables, which not only causes loss of yield but also affects the quality and storage of vegetables. Mainly invaded cabbage, cabbage, rapeseed, turnip, radish, celery, and sesame, among which cabbage was more severe. The disease is often compli.......

(1) Selection of fry and fingerlings. When buying fry and fingerlings, care should be taken to select good breeds with pure varieties, robust physique, neat specifications, lively swimming, strong water-repellent ability, and no damage. Before the transportation, it must be done by pulling net.......

1. Broiler selection can choose broodstock from September to October in the previous year or from March to April of the same year. It requires a weight of 30 to 50g, complete appendages, health and disease-free, strong activity, male to female ratio of 2 to 3:1. Male and female lobsters ha.......

First, the production of lychee will be hay flour (grass or crop stalk dried crushed), rice bran or bran, boiling water and salt were weighed in the ratio of 25%, 67%, 7% and 1%, the salt with boiling water After opening, it was cooled to 40°C and mixed with other raw materials. After 3 day.......

Weeding with biotechnology is an effective way for the development of plant protection. Its economic security, long-lasting effect, and no pollution to the environment are in line with the concept of harmonious development between man and nature. It will surely occupy an extremely importan.......

The seedless yellow bark has a large planting area in Yunan, Zhaoqing, Guangdong, but due to the low sugar content and high acidity of the fruit, the lack of flavor has seriously affected the value of the commodity. In order to discuss the effect of sweet sunflower seedlings on the acidificati.......

Before going into winter maintenance and wintering, in strict accordance with technical requirements, the tractor's three filters are carefully cleaned and maintained, and faults are eliminated in time. Adjustment oil specifications Engine oil grades are based on local temperature: Minimum.......