First, the intensive cultivation after improvement: 3 leaves to 4 leaves 1 heart tender and early planting, the water source is good, the field should be planted early, the field with poor water source can be a little late, drought and flood, water scorpion are applicable, but all should be applied to the base fertilizer Deep ploughing, flattening, try to choose strong seedlings, shallow water planting; line spacing, nest distance are 1 foot 3 inches, three nests per nest are 3 inches in a triangle. This kind of planting method is rare, dense and dense, which minimizes the competition between the nutrients and the sunlight among the plants, and is beneficial to the individual development of the plants, so that it can increase the yield substantially, which is the most advocated planting method today.
Second, the general wide and narrow line cultivation: 4 to 6 leaves, 4 feet wide, 1 inch 2 inches wide, 6 inches narrow, 6 inches in the nest, about 10,000 nests per mu, each plant with a strong seedling, a weak seedling plant . To achieve the direction of things, the ropes are straight, which is conducive to ventilation and light, reduce the pests and diseases, enhance the photosynthesis of the middle and upper leaves in the middle and late stages, increase the weight and increase the weight, thereby increasing the yield.
Third, wide and narrow row of mixed planting: on the basis of general wide and narrow line cultivation, planting 1 row of japonica rice (commonly known as wine valley) every two wide rows, the nest is 1 to 2 inches to 1 foot 5 inches, 3 to 5 per litter . Pay attention to soaking seeds and disinfection, prevent rice blast, hybrid rice and japonica rice with the same planting. Due to the rational use of space to increase indica rice, coordinated growth with hybrid rice, and effective control of rice blast, it can increase production.
Fourth, the wine valley 秧 厢 厢 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Planted 3 to 5 plants, and each hybrid plant was planted in each nest. This kind of planting saves labor and saves time, reduces disease, and is common in both.
V. Wide-line narrow planting: the east-west direction, the leash planting, the nest distance of 6 inches, the line spacing of 9 inches, 11,000 nests per mu, each nest of strong seedlings, suitable for early planting, shallow planting, favorable for early growth Quickly raise and increase the effective spike. The advantages of this planting method are convenient and easy, ventilation and light transmission, alleviating diseases, improving individual development, forming a reasonable group, which is conducive to increasing production and income.
Sixth, the painting grid: use the 6 10 10 inch grid to plant the grid, each plant is planted at each intersection, 10,000 nests per mu, each nest is planted with strong seedlings, and the things are going straight and straight. Draw evenly, Tianping thin water, as long as you can see the print, it is easy to plant, after planting, stabilize the roots. One or more people can operate, compare specifications, and combine the advantages of a variety of planting methods, saving labor and increasing production.
Seven, semi-dry type planting: east-west direction, every 1 foot 8 inch drawstring ditch ridge, ridge face tile back, water storage in the ditch, ridge surface moist, two rows per ridge, line spacing 5 to 6 Inch, nest distance of 6 inches, each nest of a single plant, about 10,000 per acre; generally planting points are basically Qi water line, planted in small seedlings. This kind of planting method not only promotes root growth, promotes individual development, but also ventilates and transmits light, reduces pests and diseases, and can also raise fish in rice fields and promote double harvest of rice and fish.
Nine, throwing cockroaches: Applicable to the cultivating mulch of the cultivating mulch, and spreading it around the three leaves. Tian Yaoping, the water should be shallow, calculate the dosage, generally about 18 trees per square meter, that is, 12,000 nests per mu. People stand on the field and use the skill to throw high, throw away, evenly throw, spread open, parabolic. It is also possible to adopt the method of tying the rope to regulate the planting without throwing, and also achieve the effect of increasing production and increasing income.
It is worth noting that no matter which method of planting, there are seven common methods, one is shallow, uniform, stable, straight, the second is seed coating or soaking and sterilizing seedlings, and the third is to re-apply the big bottom fertilizer to promote early growth. Fast-moving, the fourth is to go to the inferior disease seedlings to plant large and strong seedlings, the fifth is to avoid the high temperature time planting, the sixth is Tianping thin water planting, and the seventh is the east-west line to not planting "Shuntian Bay".
Low carbon USS flat washers, typically used with Grade 8 or hardened steel bolting, are used under bolt heads or nuts to increase the bearing surface area, or to offer protection so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a bolt or nut. Dimensional specifications are governed by ASME B18.21.1. USS (United States Standard) flat washers have a larger outer diameter than SAE (Society of Automotive Engineers) flat washers, and can be utilized in nearly any application. ASTM F844 covers the standard specifications for unhardened steel flat washers for general use. Available in zinc plated finish. Zinc plating sacrifices itself, corroding before the base material, offering added corrosion resistance.
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