In order to seize the high yield of mung bean, it is necessary to match good breeds and good practices, and do the following:
Use fine varieties. After the test demonstration, vc series of mung bean varieties such as vc3902a, vc6075a, vc3890b, etc. should be selected. These new varieties have high value for high protein, medium starch, low fat and other characteristics, and they have the advantages of early maturity, high yield, high quality, high quality and strong stress resistance, and strong resistance to diseases. The grains are shiny, green and crystal clear. The grain is full, especially has the effect of clearing away heat and detoxifying, anti-inflammatory, and has the reputation of "green pearl".
Seeding Dingmiao, reasonable dense planting: The farmer said well "five yellow June to farm, day and night a punch," illustrates the importance of early sowing. The suitable sowing date for new varieties of vc mung bean is from May 20th to June 20th, with two rows for each row, and the time is determined to be the key to high-yield and stable production of vc mungbeans. The specific time should be controlled when the first compound leaf appears seedlings, and the second compound leaf appears when the seedlings appear. Dingmiao should be adapted to local conditions, with 6000 to 8,000 strains of fertility reserves, about 12,000 thin seedlings, and 8,000 to 9,000 seedlings for medium-sized soils. Drought prevention and drainage. Mungbeans are afraid of earthworms. After sowing, the fields should be ditched so that the dark water can seep and the bright water can drain. If drought is encountered, it should be watered in time. However, attention should be paid to the promotion of sprinkler irrigation or small water drainage.
In addition to the cultivator: mung bean production coincides with the high temperature and rainy season, soil consolidation, weeds prone to growth, so we must do a good job of cultivator weeding. In the seedling stage, it is necessary to combine ramming and breaking the knot, generally cultivating 2-3 times: the first time shallow cultivator, the time when the first compound leaf emerges, take the shallow soil as the degree; the second cultivator after the seedling, this time with shallow hoe. 5? 6.5 cm is appropriate; the third time should be determined depending on the appearance of mung beans, should be carried out before budding branches, then the basic formation of roots, shallow appropriate.
Timely top dressing: Mungbeans need to have the most nutrients when they enter the flowering stage. Although rhizobia are nitrogen-fixing, they cannot meet the demand for nutrients. Therefore, diammonium phosphate should be applied at 8 to 10 kg per acre during the flowering bud period, in conjunction with foliar spraying of 0.25 kg of potassium dihydrogen phosphate and 0.3 kg of urea. Also pay attention to pest control.
Use fine varieties. After the test demonstration, vc series of mung bean varieties such as vc3902a, vc6075a, vc3890b, etc. should be selected. These new varieties have high value for high protein, medium starch, low fat and other characteristics, and they have the advantages of early maturity, high yield, high quality, high quality and strong stress resistance, and strong resistance to diseases. The grains are shiny, green and crystal clear. The grain is full, especially has the effect of clearing away heat and detoxifying, anti-inflammatory, and has the reputation of "green pearl".
Seeding Dingmiao, reasonable dense planting: The farmer said well "five yellow June to farm, day and night a punch," illustrates the importance of early sowing. The suitable sowing date for new varieties of vc mung bean is from May 20th to June 20th, with two rows for each row, and the time is determined to be the key to high-yield and stable production of vc mungbeans. The specific time should be controlled when the first compound leaf appears seedlings, and the second compound leaf appears when the seedlings appear. Dingmiao should be adapted to local conditions, with 6000 to 8,000 strains of fertility reserves, about 12,000 thin seedlings, and 8,000 to 9,000 seedlings for medium-sized soils. Drought prevention and drainage. Mungbeans are afraid of earthworms. After sowing, the fields should be ditched so that the dark water can seep and the bright water can drain. If drought is encountered, it should be watered in time. However, attention should be paid to the promotion of sprinkler irrigation or small water drainage.
In addition to the cultivator: mung bean production coincides with the high temperature and rainy season, soil consolidation, weeds prone to growth, so we must do a good job of cultivator weeding. In the seedling stage, it is necessary to combine ramming and breaking the knot, generally cultivating 2-3 times: the first time shallow cultivator, the time when the first compound leaf emerges, take the shallow soil as the degree; the second cultivator after the seedling, this time with shallow hoe. 5? 6.5 cm is appropriate; the third time should be determined depending on the appearance of mung beans, should be carried out before budding branches, then the basic formation of roots, shallow appropriate.
Timely top dressing: Mungbeans need to have the most nutrients when they enter the flowering stage. Although rhizobia are nitrogen-fixing, they cannot meet the demand for nutrients. Therefore, diammonium phosphate should be applied at 8 to 10 kg per acre during the flowering bud period, in conjunction with foliar spraying of 0.25 kg of potassium dihydrogen phosphate and 0.3 kg of urea. Also pay attention to pest control.
The valve stem is an important part of the valve.
It is used to drive, connect the actuating mechanism or handle, and directly
drive the spool to move or rotate, so as to realize the function of valve switch
or regulation.Valve stem in the valve opening and closing process is not only
moving parts, stress components, but also seals. At the same time, it is
subjected to the impact and corrosion of the medium, and it also causes friction
with the packing. Therefore, in selecting the stem material, it must be
guaranteed that it has sufficient strength at the prescribed temperature, good
impact toughness, scratch resistance, corrosion resistance. The valve stem is a
vulnerable part, and the mechanical performance and heat treatment performance
of the material should be paid attention to when selecting.The valve stem in the
valve opening and closing process, under tension, compression and torsion force,
and direct contact with the media, as well as the relative motion between the
friction and filler, so in the choice of stem material, must ensure that it
provides adequate temperature strength, good impact toughness, abrasion
resistance and corrosion resistance of.
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