How to Grasp the "Five Miao" Management

One of the important measures to achieve an increase in the total grain production in the spring is to have more breeding, more plants, more varieties, and more security. How to strengthen management, educate and educate the "five seedlings" (rice, corn, sweet potato, watermelon, and cotton) in the spring is very important.

seedling

Take the method of dry seedlings to raise seedlings.

One is to choose a good seedbed. Select a fertile, easy-to-manage, flat-topped vegetable garden as a seedbed. Decompose the decomposed defecates on the topsoil of 2 square meters, then plow till the whole fine, make the seedbed 3 days before sowing, the seedbed is opened by 1.6 meters, the car is 1.2 meters wide, the car ditch is 0.4 meters, fine flat car . Remove the bed soil from the walkway and remove the fines; soak the water before sowing, sowing the powder mouth valley (150g/m2), cover the fine soil, and use 30% Sulfur Emulsion 75ml and water 50kg evenly spray, use after sowing. The bamboo pieces are covered with arches and covered with membranes. Both sides and two sides of the membrane should be sealed and compacted with fine soil.

The second is to grasp the seedbed management. From sowing to emergence, the main insulation. If the film temperature exceeds 35C

When it is time to open the two ventilation cooling and timely filming. If it is found that the topsoil is whitish, make up a small amount of water. If the long-term low-temperature and rainy weather is 5-6 days after sowing, the air in the membrane is dirty, and the membrane should be opened for ventilation at noon.

After emergence, the temperature in the bed is controlled at about 25C, and 50% of the enemy's pine 2.5 grams per square meter is weighed with 2.5 kg of water. If the seedbed is whitish, water may be sprayed in an appropriate amount.

From one leaf to two leaves and one heart, strictly control the water. The temperature inside the film should be controlled at about 20C. On sunny days, the mulching film is fully exposed or partially opened during the day, and the film is covered before 4 o'clock in the afternoon. On cloudy days, open 1-2 hours at noon. On rainy days, open two air changes at noon, but do not allow rain to reach the seedbed. When the temperature in the membrane is lower than 12C, it should be covered with a membrane to prevent chilling. During this period, the bed soil should be kept dry, even if there are cracks on the seedbed, as long as the leaves do not reel, do not have to water.

Two-leaf one-heart to three-leaf one-heart period, in case of cold wave to cover the film seedlings. In order to adapt to the external environment, the clover can open the thin film ventilation seedlings on sunny days and cloudy days. In addition to the rainy days, the night cover will be gradually opened. When two leaves are in one heart, spray 0.3 kg of ammonium sulfate per square meter, and then spray the seedlings with clean water to prevent burns. Seedlings, regardless of transplanting leaves, do not generally remove scaffolds and membranes before planting, so that when the rain is raining, the cover film will be waterproof and keep the soil dry.

After the three-leaf and one-heart period, keep the seedbed moist. Each time a long leaf is topdressed with a fertilizer, mainly feces water, take a small amount of fertilizer. Long-term multi-seedlings were sprayed with paclobutrazol to control the seedlings during the three-leaf one-hearted period.

Corn seedlings

Take a fattening approach. The method is: using seeds with high germination rate; the seedbed is selected to be deep and loose in the upper layer, fertile in the soil, and capable of discharging irrigation fields. One piece of pig manure plus one piece of fine soil and the appropriate amount of pig manure water are mixed and mixed uniformly. 1- In 2 days, the fattening seedlings were made, and 1 fattening group sowed 1 seed; the seedling seedbed was kept moist, and when the seedlings grew to a leaf, the human urine water was thinly applied. 2-3 days before transplanting to remove the film and practice seedlings.

Sweet potato seedlings

Take a thin film of mulching. The specific approach is: choose the leeward sunny, convenient management of garden soil for seedbeds, after the fine soil preparation to open the box by 4.5 feet, 1.5 feet square digging nest, 100-120 nest per acre seedling seedlings, each nest of high quality dry manure 0.5 Mix more than kilograms with soil. In the middle of March, select sunny days and fill the manure with water. Spread an excellent, smooth and disease-free medium fleas on each nest, cover with a layer of fine soil, cover the mulch well, and squeeze all around. After the seedlings grow out, the broken film induces the emergence of the seedlings, and the cover is tightly covered with fine soil. Miao Qi is one inch long. It is fed once a week with defecation water and cultivated into strong vines. Immediately after planting, 30 mu of clear water was used to take a small amount of chemical nitrogen fertilizer to promote the early growth of the seedlings; timely weeding was done; 10 days before corn harvest, 5-8 kg of potassium sulfate, 4-6 urea Kilograms of manure water through the forest were applied to the nest.

Watermelon seedlings

Preparation before planting. Shed should be shed 7-10 days in advance to facilitate the increase in ground temperature. A sorghum with a width of 1 meter and a height of 10 centimeters is used. The scallops are fish-shaped and the sewer width is 50 cm. After the screed is leveled, the soil film is applied.

Nursery and colonization. Greenhouse cultivated watermelons were transplanted with seedlings. It is best to use plastic rake or paper hoe to raise seedlings. When the seedlings grow to 2-3 true leaves, they will be planted in greenhouses. Planting distance 40 cm, planting in the sorghum 1/2 on both sides of the ditch, planting 1500-1700 seedlings per acre, when planting mulch film digging, planting points after the watering, covering the good soil pressure membrane. When planting, it can be watered in the ditch in case of a sunny day, so that the water seeps into the melon hole. After the planting, the upper temperature of the seedlings was controlled as much as possible to keep the seedlings at ease. The general shed requires 25-32°C. As the outside temperature continues to increase, open the skylights and sheds for ventilation during the day. After the middle of May, the film on both sides of the greenhouse was rolled up for large ventilation.

Cotton seedlings

One is to check seedlings for seedlings early. After sowing and transplanting of cotton, if the seedlings are found to be above 20%, they should be immediately replanted. If the lack of seedlings is below 20%, supplementary planting can be used. The cotton seedlings planted with supplements should be fully soiled and full-filled with defecation water to increase the survival rate and promote its rapid growth.

The second is the early morning seedlings. Immediately after the seedlings, only 3-4 strains were left in each nest. Dingmiao is usually carried out at the time of two leaves, leaving only 1-2 strains per nest, but with sufficient density. Stable seedlings should remain strong seedlings, to weak seedlings, diseased seedlings and hybrid seedlings.

The third is early weeding and weeding. Seedling cultivating loose soil is one of the important measures to promote early growth of strong seedlings. Seedlings during the seedling period should be diligent, deep and fine. "Diligence" is to be done after the rain. There must be grass on the floor to keep the soil loose and free of weeds. "Deep" means that the depth of inter-row cultivating is gradually deepened to about 10 cm, and about 4 cm between plants. And to do wet, floor, Miao Wang should be properly versed in, but the drought should be properly shallow. "Simply" means to make a horizontal slogan, see each other on the four sides, do not miss it, do not leave grass, do not hurt the seedlings, and bury the seedlings.

The fourth is to apply Miao Fei early. Miao Fei should be based on nitrogen fertilizer, the amount should not be too much, the fertilization time in the three-leaf period (during the time), the general Mushi manure water 5-10 Tam, urea 1-2 kg.

The fifth is early treatment of pests and diseases. The main diseases of cotton seedlings are blight and anthracnose, which often cause bad seeds and dead seedlings. The control method is: 50% carbendazim per acre with 50 kg water evenly sprayed 50 kg; cotton seedling pests are mainly tigers And locusts, etc. should use the control of pesticides on the road. He Song

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