I. General situation The concept of China's Nanguo Beiyun refers to the fruit grown and sold in the tropical and subtropical evergreen trees in the south. It is transported to all parts of the north and is called Nanguo Beiyun. As for some deciduous fruit trees in the southern provinces, such a ......
Rice-Duck communal education should follow its ecological characteristics, exert its ecological advantages, coordinate its ecological elements, and grasp its key technologies: First, create a growing environment for rice and duck breeding. It is necessary to choose paddy fields with convenient dra ......
Matrix preparation recipe: peat soil 90 packs (50 kg/pack), perlite 25 kg (meters watered), fine sand 2000 kg, lime powder 17.5 kg. The raw materials were all mixed well, stratified into the pool for disinfection, each layer was applied 1500 times the line grams of solution, and add 500 times the ......
Fertilizer management Almonds, like other fruit trees, must constantly absorb various nutrients from the soil in order to maintain normal growth and development. And because it is a perennial fruit tree, once it is planted, it must be fixed in one place to complete its life. Therefore, timely sup ......
Prior to use, the new tractor should do the following five aspects of the work, which is an important measure to ensure the normal operation of the tractor and prolong its service life. 1. The tightening of the connecting parts of the tractors is factory-tested, but during the repeated transfer pr ......
1. Soil: It is appropriate to use rich, humus-rich acidic soil for cultivation. This is the key to successful planting of northern families. Ordinarily, one piece of rotten bean cake and one piece of cooked bean cake can be used, and a certain amount of ferrous sulfate can be added, or the bowl can ......
Take two tablespoons of talcum powder, remove the valve core from the tire, exhaust the inner tube air, insert a funnel into the valve with a cardboard shell, and pour the talcum powder into the inner tube. When the irrigation fails, the funnel can be removed. , Rotate the wheel and irrigate until ......
First, the live cabbage before sowing seedlings, with 70% Dole EC 100 ml or 48% dimethine EC 100 ~ 220 ml / mu spraying cabbage weed control. Second, after the emergence of cabbage on the weeds stems and leaves processing, weeds in the second leaf to the tillering period, the use of 6.9% of the We ......
1. Mediated Transformation Agrobacterium is a gram-negative bacterium commonly found in soil that can chemotactically infect most dicotyledonous wounds under natural conditions and induce crown gall tumors or Hairy roots. The Agrobacterium tumefaciens and A. rhizogenes cells contain Ti and Ri plasm ......
1) After exhausting the exhaust pipe of an iron cattle-55 tractor, the blue smoke was excellent. At that time, the analysis may be that the running-in time was not enough, but after a few days of running-in, the blue smoke still did not disappear. After careful observation, it was found that the bl ......