Transplanting cotton seedlings lately and transplanting cotton seedlings is an effective cultivation technique to seize cotton seedlings, early precocity, high quality and high yield. The planting of cotton seedlings from seedbeds into the field often results in delayed emergence of the seedlings and prolonged seedlings. The reasons and management measures are as follows: The quality of seedlings is poor. The poor quality of seedlings is mainly due to the fact that no cotton seed was selected, the seedbed soil was not fat, and the management was improper. Therefore, the cotton seedlings bred were weak, sick, legs high and poor in stress resistance. According to experiments, seedlings after transplanting are fast and slow, usually 5 to 7 days, while weak seedlings are generally more than 10 to 15 days. Therefore, it is very important to cultivate strong seedlings and improve the quality of cotton seedlings. Seedlings should be filled with seeds, full seedlings, fertile bed soil, double membranes (a layer of film, a layer of film) seedlings, and should strengthen seedbed management, timely ventilation and hardening seedlings. Blindly planted prematurely. Premature blind planting is another important reason for delaying transplanted cotton seedlings and prolonging seedlings. According to experiments, when the soil temperature is less than 16°C at 5 cm, the transplanted cotton seedlings do not take new roots and the seedling growth period is very long, thus forming a stiff seedling. So be sure to wait until the 5 cm ground temperature stabilizes at 17 °C. Grasp the cold tail warmer and transplant it on a sunny day. This will prevent or reduce the emergence of sterile seedlings and shorten the seedling period. Rainy day planting. Many cotton farmers are rushing to plant cotton seedlings on rainy days, thinking that water is good. In fact, on the contrary, especially in the middle and early May, due to low temperature, poor light, soil hardening, easy to cause cold seedlings, roots do not tie after planting, seedlings do not produce, thus forming a frozen seedlings. In the event of such weather, we must stop transplanting and wait until the rain is fine and air warms up. Although the time for transplanting has been postponed, it is possible to avoid the emergence of severe seedlings and a short seedling period. Poor quality of transplanting. When the cotton seedlings are transplanted, the soil is rough, and the digging holes are shallow. There are dry grasshoppers in the holes. The cotton seedlings are placed incorrectly. The bad carcasses and the scattered carcasses are not removed. The soil is unreal, resulting in dewlaps, hanging roots, and the combination of carcass and field soil. Bad seedlings cause dehydration and form a stiff seedling. Corresponding measures: When digging the hole, the dry soil should be removed. The pod should be removed from the ground by 2 cm or so. Cover the earth with 2/3 of the carcasses. Put the soil on the outside of the carp according to the actual conditions, and then water it properly according to the temperature and temperature. After the water seepage, cover the soil again. Lack of fertilizer or over-fertilization. When fertilizing seedlings is insufficient, the seedbeds are not fat, the cultivated cotton seedlings are weak due to lack of fertilizers, and their ability to resist natural disasters is poor. After being planted, they are vulnerable to unfavorable environment and are prone to stiff seedlings. During transplanting, carcass application of urea is excessive and easy. Causes root-burning seedlings that cause prolonged seedlings. Corresponding measures: In addition to applying the base fertilizer to the seedbed and fertilizing the soil, a 2% urea solution or 600 to 800-fold potassium dihydrogen phosphate solution is sprayed on the seedbed for 2 to 3 days before transplanting to remove the plant fertilizer to supplement the body of the cotton seedling. Nutrients enhance the ability of seedlings to resist root-trapping and transplanting. Combining with transplanting each acre and then applying 52% cotton special fertilizer 2.5 to 4 kg, in order to facilitate the early emergence of seedlings. Management lags behind. The contradiction between the "three disputes" during the symbiosis period of wheat and cotton planting was prominent, and the growth of cotton seedlings was weak. After the harvest, the light conditions improved, but the soil was severely compacted, and the cotton seedlings were in the state of lack of fertilizer and water; the wheat maggots continued to evaporate and lose moisture, and the insects transferred from the wheat trees to the cotton seedlings. At this time, they were busy in Sanxia, ​​and management lag was easy. A large number of weak seedlings, diseased seedlings, dead seedlings and weak seedlings appeared. Therefore, management must be conducted in a timely manner, ie, drought and robbing should be used to protect the seedlings, water, trees, robbing and cultivating seedlings, robbing cultivators, destroying hoe, cutting knots, robbing seedlings, cultivating seedlings, ensuring density, and rushing to control pests and diseases. Special attention should be paid to the control of cotton aphids and reds. Spiders and blind spots. Transplanting a small pepper, transplanting 1. Transplanting time. Small peppers should be selected when transplanting seedlings, strong seedlings, seedling height 15 ~ 20 cm, 6 ~ 10 leaves, bud blossom, root system developed, complete and with old bed soil seedlings, seedling leaf color black and green Is normal. Before and after the rain, from late April to mid-May, when the ground temperature began to stabilize at 17 °C ~ 18 °C, transplanting was more appropriate. If it is too early to be susceptible to freezing damage, it will not produce new roots, slow seedlings slowly, and it will easily form small old seedlings; too late will affect the yield. 2. Transplanting method. Transplanting small peppers depends on the day, places, and seedlings. Looking at the sky is carried out on a sunny evening or on a cloudy day. The most rainy days are transplanted. To look at the land is to look at soil moisture, and it is better to transplant black pods. To see Miao, it is to select large seedlings, strong seedlings, transplanted roots developed seedlings, can improve the survival rate of transplanted seedlings. Generally adopt a one-draft transplant method: raise seedlings (more with soil, less root damage), transport seedlings (to prevent mechanical damage), planing pit (or gully or flat planting), fertilization (one organic fertilizer per hole) , planting seedlings (planting straight compaction), watering (to water a bowl of life-saving water, returning seedlings to water), and spreading bait (with a 90% crystal trichlorfon 150 g warm water 1.5 kg per acre, evenly sprayed on 5 kilograms of roasted wheat bran can be boring for 4 hours, and earth can be used to prevent falling seedlings and hoeing. As long as the ring is fastened during transplanting, the whole seedling can be colonized once. 3. Closely planted. The peppers are compact in shape and weak in branching. They are not easy to grow and are more shade-tolerant and are suitable for dense planting. Reasonable dense planting can not only make full use of sunlight and soil, but also enable individuals and groups to develop harmoniously. There are many peppers, peppers, peppers, and peppers, and they can produce early trees and early peppers to improve the quality of peppers. According to the Institute of Vegetables of the Chinese Academy of Agricultural Sciences, compared with the relatively dense planting and thinning of pepper, the soil temperature decreased by 1°C to 2°C during the high temperature months, and the temperature decreased by 2°C to 5°C. The average relative humidity of the air increased by 13%. Can reduce the light intensity, so that the virus incidence decreased by about 17%, the disease index was 6.4. Therefore, density can change the microclimate and increase production by strains is an important technical measure to seize high yields. The transplanting density is 8000-10,000 strains per acre, or one strain of double strains and 4000-5000 acres per acre. 4. Do a good job of shading and improve the quality of peppers. Practice has proved that the small pepper likes semi-shade site conditions and grows better in the semi-shade zone of the corn than in the field. It has a low rate of leaf loss, a low incidence, and a high rate of results. It does not produce pecan, single fruit weight, and individual plant yield. It is about 20% higher than Daejeon plants, and the coloring and ripening of fruits is later. Therefore, we must vigorously promote intercropping of corn and small peppers. That is, each 6 rows of peppers must be interplanted with 1 row of corn, with 2 to 3 plants per hole, with a distance of 50 cm. This way, small peppers will be collected, and maize will receive 250 per mu. ~ 300 kg is not a problem. Second, field management Fertilizer management. The planting of small peppers generally adopts a “one-shelled bombardment†fertilization method, which can produce 300-400 kg per mu. The method is: Applying 52 kg of pepper formula fertilizer for 40 kg at one time, and no fertilizer during the growing period. However, in order to maintain the poor quality of pepper or defermented fields, it should be combined with water or rain to catch up available fertilizer. Planting for about 10 days is returning to seedling stage. Mushi urea can be used for 5-8 kilograms, and the seedlings can be quickly grown into strong seedlings through shallow hoeing, topdressing, and watering. 2. Weeding and weeding. As the saying goes, “The cultivator has left Taiwan to stay, and the chili peppers have become thick and thick.†“Of the earthworms, the roots are moving, and it is easy to get ridiculed.†The cultivator must strictly control the head, shallowly, twice, deep, and three times without damaging the roots. The principle of ridiculing the head was to pass through the shallowness of the head, to use it twice, and to use it three times. In other words, soil compaction after transplanting should be carried out 1 or 2 times. After the plants have been topped, they should be pounded one time. Before mulching, pay attention to earth protection and roots, so that there is a small ditch between the rows to facilitate drainage. Can prevent lodging, but also play a role in water conservation.
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