Head High-yielding Cultivation Techniques (below)

V. Field Management
1. Weeding and weeding. Cultivate 2 to 3 times in the early growth stage and combine with weeding to promote tillering. In the early growth stage, weeds are prone to grow in the field. After sowing, we can use 33% of weeding and 100-150g of water to spray 50kg of water on seedlings. In the seedling stage, we can use high-efficiency herbicides to spray the weeds in the 2 to 3 leaf stage. In the middle and late stages of the first stage of growth, earth is used to prevent the head from being exposed to the ground to turn green and affect the quality.
2. Moisture management. Fear of drought and fear of drought, the need for high soil moisture growth. After sowing, sufficient water shall be sprayed to facilitate emergence of seedlings. The small water at the seedling stage will be used to promote early growth and rapid growth. The water supply shall be ensured during the prosperous period, and the water shall be promptly replenished in case of drought to promote the normal growth of the plants, expansion of the bulbs, and prevention of yellowing of the leaves. , premature aging. During the rainy season, precautions should be taken to prevent the accumulation of stagnant water in the field. After the rain, the gutter should be drained in time to prevent underground root rot.
3. Top dressing. On the basis of applying basal fertilizer, it is necessary to grasp the top dressing in the following three periods: After emergence (7 to 10 days after sowing), pour dry, diluted faecal water or 0.5% urea solution to promote seedling growth. 2 wax fat. 10 days before the winter solstice, every 667 m2 topdressing nitrogen, phosphorus, potassium compound fertilizer 15 ~ 20kg or decomposed organic fertilizer 750 ~ 1000kg; 3 strong tree fertilizer. After the temperature rises in March, it will enter the vigorous growth and bulb formation period of the head seedlings. At this time, a large amount of fertilizer will be required. Apply urea 20 to 25 kg per 667 square meters, 15 kg of potassium sulfate, or decompose concentrated manure. During head growth, fertilizer should be topdressed as soon as there is a deficiency.
4. Pest control. Based on agricultural control, select disease-resistant varieties, strengthen field management, and increase plant resistance: implement crop rotation, soil disinfection, deep ravine sorghum, rational close planting, application of decomposed organic fertilizer, non-irrigation, removal of pastoral and surrounding diseases, etc. Measures to prevent and control, reduce the occurrence of pests and diseases. 1 Prevention and treatment of common diseases. Base rot, 95% green hen No. 1 4000 times fluid, applied to the site of disease; fungal diseases such as downy mildew, blight, etc., can be used in the initial stage of metalaxyl, Kimredamir, thiophanate-methyl Such as the 1000 times spray control of water; bacterial diseases, can be selected to kill the water spray 1000 times or streptomycin and other liquid pouring. 2 common pest control. Onion humming horses, use Ruijin special 10ml water 15kg spray; locust use Leko EC or imidacloprid spray; wolfberry with 40% rosporine 50g/667 square meters irrigation root or spray base; spray.
Sixth, timely harvesting for fresh food, harvested in February to April, when the leaves fully grown, fresh texture. During harvesting, the entire plant was dug up, cut off after the roots were cleaned, and the leaves were listed along with the bulbs. Harvested heads were used for processing. At the end of June, the head blades began to yellow and the heads were ready to be harvested until the end of September. However, the bulbs were easily cracked after harvest and affected the quality. Divide bulbs line by line as harvesting to minimize damage. The seedlings can be left until the end of August or the beginning of September or before sowing so that the bulbs can fully inflate. Generally in August, after the ground is withered, it is dug up, bundled into bundles, hung in ventilated places such as eaves, or stacked on an indoor loft plate (the stacking thickness should not exceed 20cm). (End of the article)
Author unit: Guangxi Qinzhou Agricultural School Crop Cultivation Office

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