In May, Apple has begun to enter the expansion period, and the fruit tree has entered a prolonged period. The growth of spring has entered a long growing period. Therefore, nitrogen metabolism is still in a prosperous period. In the middle and late stages, the mature larvae of the small heartworm will break out of the ground, and the first generation of golden moths will also endanger. Therefore, the following management points should be mainly focused on:
Steel structure is composed of iron
steel, is one of the main types of building structure. The steel structure is mainly composed of steel beams, steel columns, steel trusses and other
components made of steel and steel plates. And the joints or bolts or rivets
are usually used to connect the components or parts. Because of its lighter
weight, and the construction is simple, widely used in large factories, venues,
super high-level areas.
Specifications:
1. High material strength, light weight
2. Steel internal organizational structure
is uniform, nearly isotropic homogeneous body.
3. Steel components facilitate the
manufacture of the factory, site assembly. Factory mechanized manufacturing of
steel structural components, high precision, high production efficiency, site
assembly speed, short construction period. Steel structure is the most
industrialized structure.
4. Steel structure construction
building demolition almost no construction waste, steel can be recycled.
Steel Structure Steel Structure,Steel Buildings,Steel Structure Building,Steel Structure Design Shijiazhuang Zhouming Steel Building Materials Co., Ltd. , https://www.zmsteels.com
Apple managed to catch 5 points in May
1. Pay attention to calcium supplementation. Spraying 0.3% urea with sprayed leaves, the first peak of calcium absorption after apple blossoming and before bagging, is also the key period for apple tree calcium to prevent bitter disease. Generally, calcium should be supplemented 2-3 Times, about 10 days apart, can spray 800 times of calcium sulphate, Cui Kang calcium treasure, calcium nitrate and so on.
2. Timely fruit thinning. The amount of fruit left in the mu is 11,000-13,000, and the bag is 30-40 days after flowering. The bag is sprayed before DuPont Yibao 1200 times or the smashing 800 times + Jiato 1000 times + Wanling 3000 times + calcium fertilizer .
3. Do a good job of summer shears. To eliminate the extra erect branches on the back, the long branches of the scorpion and the peripheral competition branches, the young and the saplings should adopt various reversing techniques such as topping and twisting, taking branches, bending back, and hanging upside, and ring cutting, ring stripping, etc. A variety of carving techniques.
4. Interplanting and weeding. Tillage removes weeds, increases soil organic matter, enhances soil fertility, and deepens the tillage layer to promote root growth.
5. Pest control. The main prevention and control of the newly-excavated peach small heart aging larvae, scale insects, leaf miner and powdery mildew, etc., should focus on the prevention and control of the following two pests: (1) ground control peach small heartworm. Generally, in the middle and late May, when the peach larvae are about to be unearthed, spray 48% of the 500-800 times solution around the tree tray, spray the ground, then use the dish to slap the tree tray with the shovel. . (2) Prevention and control of scale insect nymphs. From late May to mid-June, when the nymphs of the scales begin to climb out of the hard shell, they will spray 800 times or 40% of the killing phosphorus 1000-1200 times.
Total 1 | <First <Prev 1 Next> Last> |
share to: