Last year, for two consecutive years this year, I mainly directed high-yield corn demonstration demonstrations to 10 science and technology model households in the Yunfeng village committee of my town. From my graduation to the present, I have been working at Wanqiao township agricultural station for the village of Yunfeng village. The production is well understood. In recent years, the township Yunfeng village committee is in a leading position in the town because of its geographically advantageous position, and it has been leading the town in terms of agricultural industrial structure adjustment. Dry farming and economic crops have been increasing year by year. Farmers have obtained greater economic benefits. In the planting industry, corn, garlic, flue-cured tobacco, garlic and corn are interplanted, and various planting patterns of corn and flue-cured vegetables are gradually formed, and corn is also the main part of the village's production in the spring. crop. In order to do a good job in the cultivation of high-yield corn for 10 technology demonstration households, during the corn planting period, I regularly and aperiodically provided technical guidance to technical demonstration households in the form of training and field guidance, and summarized the high-yield cultivation techniques of maize in the past few years. Truthfully passed to various technology demonstration households, it has also achieved certain results. My main promotion of high-yielding corn cultivation techniques is:
1. Well-selected land: Corn has a well-developed root system and strong adaptability. Its requirements for soil types are not strict, but corn plants are tall and have many root systems. It takes a lot of water and nutrients from the soil, so generally we have to choose The terrain is relatively flat, with deep soil, loose texture, good permeability, and a land with medium or higher fertility, good water retention, and good fertility, to achieve higher yields. In addition to some of the cold-water immersed fields in Yunfeng, most of the remaining fields are suitable for growing corn.
2. Choose good varieties. Now we are planting corn seeds that are hybrid seeds. The popular term is one-year species (can not be preserved). It is mainly to use its heterosis to increase the yield and quality of corn and its resistance. Disease and stress resistance, in recent years, the main maize hybrids in the city mainly Yuyu 22, 3202, Huidan 4 mainly with the Great Wall 799, United 3, these varieties of field performance in recent years is still relatively stable , are suitable for our local planting, each family can choose the above varieties to plant, choose not to choose the kind of species, mainly low germination
3. Apply base fertilizer and formula fertilization: The role of basal fertilizer is mainly to fertilize fertility, improve soil physical properties, loosen soil, be conducive to microbial activity, timely supply nutrients at seedling stage, promote root development, and create good seedlings for cultivation. The environmental conditions.
The principle of fertilizing corn is to apply sufficient basic fertilizer, apply early Miaofei (30-35 days after sowing, when the leaves are 6-7 leaves), and reapply jointing fertilizer (60-65 days after sowing, the number of leaves is 11- 12 leaves).
The fertilization amount per mu of corn is generally: 1000-1500 kg of farmyard manure, 30 kg of normal calcium, 40 kg of urea, 10 kg of potash, and 2 kg of zinc fertilizer.
The fertilization method in each period is:
The first is to apply base fertilizer: base fertilizer is mainly applied with delayed fertilizer and available fertilizer, (said slow fertilizer is our farm fertilizer, quick fertilizer refers to ordinary calcium, urea, potash and zinc fertilizer), 1000-1500 kg Organic fertilizer, 30 kg of calcium sulphate, 40 kg of urea, 15% of which is 6 kg of urea and 2 kg of zinc fertilizer are applied as a base fertilizer into the field at one time. (The effect is better, of course. Shi mainly.
The second is the early application of Miaofei, when the leaves in the 6-7 leaves, the 25% of 40 kg of urea, which is 10 kg of urea topdressing method applied to the corn plant, when applied to the urea to leave the plant 3 - 4 cm, can not be applied to the plant, the best time to choose the time after the rain, if the weather is too dry, it is best to pour fertilizer after the water.
The third is to re-apply joint-fertilizer. Fertilizer application usually applies fertilizer two months after sowing. If you can't remember the sowing time, you can also count the number of corn leaves, usually when the number of corn leaves is 11-12. To be applied, this time fertilization is to apply 40 kg of urea 60%, that is, 40 kg of urea in a single application of 24 kg and 10 kg of potassium fertilizer left after the application of base fertilizer and Miao Fei. The method of fertilization is the same as the method of top-dressing seedlings above.
4, timely sowing, reasonable dense planting:
4.1 Timely sowing, we can only sell at a good price due to the morning market of garlic. Corn sowing is generally started in mid- and late February, and sowing is basically completed at the end of March. The temperature at this time is also Basically stable at 10-12 degrees, are still suitable for corn planting, but we here in March and March more or less frost or corn seedlings will cause some impact.
4.2 Properly dense planting, the best sowing density of corn is about 4500-5500 strains per acre. If the density is too low or too high, the yield of corn will not go up. The planting of corn was carried out in double rows, with a 1.2-meter opening and a spacing of 25-30 cm.
5. Strengthen field management
5.1 Maize seedling management, mainly seedling seedlings, seedlings and seedlings. After the emergence of corn seedlings to timely check seedlings, mainly to prevent seedlings crowding each other, competing for light and fertilizer, waste of nutrients and water, usually when the corn grows to 3-4 leaves must be divided between the seedlings, the seedlings should be closely preserved, Stay small and stay large. Inseminated plants stay strong. Basically, when the number of leaves is 4-5 leaves, the whole field will be set. If you want to make up the seedlings, generally take two methods, one is to make up the seedlings, it must be sowed after soaking and germination; the second is transplanting seedlings and planting (transplanted seedlings are generally required in the 3 leaf period, if the transplanted seedlings are too large, The survival rate is low). After transplanting, the rooting water should be poured. In general, no matter whether it is seeding or transplanting, it must be completed before the 3 leaf stage, and after applying the seedlings, apply the water fertilizer 1-2 times.
The pests in the seedling stage are mainly ground tigers. The hazards of the ground tigers are mainly to bite off the stems near the ground, causing the plants to die, resulting in the lack of ridges and ridges. The control of the ground tiger can be mixed with 50% Bataan WP. Rice bran or wheat bran is used to trap larvae in the corn field at 1:50.
5.2 Corn cultivating management: Corn cultivating management is generally carried out in combination with top-dressing at the seedling stage and jointing stage, 6.5-7 leaves are combined with topdressing for small earth, and 11-12 leaves are combined with topdressing joint-fertilizer for large earthing.
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