Sitting in the field, the main spikes and the early-born tillers are early and early, and the headings are not uniform. It is easy to cause the illusion of mixed seeds. The heavy ones are late and the tillers are severely delayed, resulting in abnormal harvesting. damage. For the sitting squat, the common method is to use zinc sulphate to solve the problem of low-effectiveness of zinc at low temperature; the second is to drain the rice after transplanting. However, due to the lack of water source guarantees in many areas, it is impossible to drain the fields, and some fields cannot drain the water at all, resulting in a lack of coping methods. The essence of sitting is that there is a serious lack of growth. The root cause is that the root system is underdeveloped. The roots have no absorption capacity, and can not absorb the nutrients needed for growth in the soil. The root system is the most important organ for absorbing water and nutrients. The so-called roots are deep and leafy. Therefore, the key to solving the problem is to solve the root activity. 1. The nursery school adopts dry nursery, two leaves and one heart and 4-5 leaves, and the rooting lengthening agent is applied twice. The age of the age is 30-35 days. The late-maturing variety can be extended to the age of the horse, so that the dwarf leaves are more developed and the roots are developed. Excellent seedlings. 2. After transplanting for one week, the squatting field will be immediately used with the root-promoting agent plus the big-name versatile tyrant (full-nutrient micro-fertilizer), and the leaf surface will be sprayed once; for the sitting field, it can be used in the conventional dosage. Double the use, basically can grow normally 5-7 days after application. Hexagon Socket Countersunk Head Bolts The hexagon socket countersunk bolts are also called flat cup hexagon socket bolts. They are generally made of English and metric systems, and are often made of stainless steel and carbon steel. The outer edge of the Screw head is round, and the middle is a concave hexagon. Its head is a 90-degree cone. After assembly, the screw head can fall into the assembly surface to keep the assembly surface neat. Countersunk hexagon socket bolts are often used on mechanical equipment, which are mainly beneficial to fastening, disassembling, and not easy to slip. Hexagon Socket Countersunk Head Bolts,Hex Socket Countersunk Head Screw,Socket Head Cap Scre,Countersunk Head Bolt Jiangsu Jiajie Special Screw Co., Ltd , https://www.jiajienuts.com
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