Cultivation and Soil and Water Problems of Cabbage and Prevention
Due to the different levels of cultivation of the farmers, there are some problems in the cultivation of cabbage. One is that the roots become dark, the growth is slow, and the bulbs are rotted; the second one is that the bulbs are loose or delayed; the third is that the seedlings are high in height, the young leaves are light in color, the rosette leaves are wilted, and they fall off early, and they don't lag behind; Some young leaves are slender, curling to the inside, affecting the quality of the knots, some leaves dark green, the leaves start slowly; Fifth, some seedlings are not easy to grow prematurely convulsions, and some grow too fast, prone to cold injury; Sixth, there is a decline in the maturity of some mature, easy-to-fire dry disease, and some dry leaves ball, black rot. These problems will lead to a decline in the commodity rate of cabbage and a decrease in the storage tolerance. To solve these problems, we should start with cultivation and management of fertilizer and water. Formula balanced fertilization yield increase quality “Small fertilizer raises the seedlings, the middle fertilizer promotes the leaves, and the big fertilizers attack the ball.†Hi fertile, impatient and infertile, is one of the reproductive characteristics of cabbage, and its fertilizer application should pay attention to the scientific formula of different fertilizer varieties. According to the determination of the agricultural research department, the ratio of cabbage to NPK needs to be generally 3:1:4. In the calcium-depleted soil, the ratio of nitrogen, phosphorus, potassium and calcium is 3.5:1:4.2:2.7. It is recommended that the farmer's base fertilizer should be applied to farmyard manures that are fully decomposed between 4,000 and 5,000 kilograms, or bio-organic fertilizers, bio-organic compound fertilizers, amino acid organic multi-component high-energy compound fertilizers, 200-300 kilograms of organic fertilizer, and 40-50 kilograms of superphosphate. Potassium chloride or potassium sulfate 15 to 20 kg. The poorer fertility of Daejeon, in order to match the delayed effect with the available fertilizer, can also apply 50-80 kg of ammonium bicarbonate per mu, or 50-60 kg of high-content multiple compound fertilizer. Topdressing is recommended separately at the seedling stage, rosette stage and ball stage. After transplanting and easing seedlings, 600-800 kilograms of human fecal urine can be recovered per acre. During the period of vegetative growth, 1,000 to 1,500 kilograms of manure can be recovered, especially during the ball-bearing period. Fecal urine 1600 to 2000 kilograms, or urea 15 to 20 kilograms. The application of organic fertilizers and calcium fertilizers will help prevent dried cabbage heart disease and increase freshness, as well as storage and long-distance transportation. For boron-deficient and calcium-depleted soils, 0.01 to 0.02% Sonic Boron solution and 0.3% to 0.5% CaO2 solution may be sprayed 2 to 3 times at the beginning of the ball growth. Foliar fertilizer should be selected in the sunny afternoon or cloudy weather without wind, which can improve fertilizer utilization. At present, there are many types of organic fertilizer on the market, and many unfamiliar poultry droppings are mixed in, resulting in rot, burning, and dead seedlings. At the same time, it also leads to acidification of the soil, increasing the content of antibiotics and heavy metals, and reducing the quality of cabbage. Farmers should pay attention to purchasing regular organic fertilizers from regular agricultural companies. It should also be noted that cabbage has large leaves, strong transpiration, and high water consumption. It is necessary to maintain the moist state of the soil at any time, so that water can be used to adjust the moisture, and water can be used to adjust fertilization to ensure the ability of the soil to supply fertilizer and water. Choosing suitable cabbage growing soil The main roots of Brassica oleracea are stoutly developed, but the roots of the lateral roots are shallow, usually distributed in a 20-30 cm deep plowing layer. The root distribution width is about 70-80 cm. The root system is very strong in regeneration after injury, and a large number of points can occur after transplanting. Branches and adventitious roots. The roots are suitable for a better environment and do not tolerate drought or stains. One must pay attention to the choice of soil. Although the adaptability of cabbage to soil is very strong and the requirements are not very strict, in the places where conditions are suitable, neutral or slightly acidic soils or deep loam or sandy loam soil should be chosen as far as possible, which is more conducive to hair rooting. Second, we must improve the plantation area's farmland water system facilities, raise the conditions for irrigation and drainage, so that the groundwater level is reduced to 80 cm or less, so that water can be cited, drought resistance, water energy, energy and energy filter to prevent black root rot Ball rot. Third, we must fine-level cultivated land. After the harvest of the previous crop, due to the seasonality of planting cabbage, the time is urgent, and it is necessary to timely grab the soil preparation, remove the soil compaction of the former crop, and create an environment suitable for rooting of the soil, grass and deep trenches. The width is about 2 meters, the ditch is 50 to 60 centimeters deep, the ditch is 20 to 30 centimeters deep, and the living environment is suitable for rooting. Brassica can grow robustly. Reasonable arrangement of sowing date and planting density The supply period of spring cabbage in the market is relatively long. It is recommended to choose a strong winter variety and reasonably arrange the sowing date. The spring cabbage will be harvested at the latest from the small to the summer solstice. If the seedlings grow too early, the seedlings will develop earlier. If they encounter low temperatures, they will pass through the vernalization stage earlier. The next year, the ball will be twitched early before the end of the year. Daejeon planting spring cabbage, generally 2 to 3 days before and after the frost is appropriate for planting, during which time it should be 2 to 3 times, 6 to 7 true leaves when transplanting Dingmiao is better. Cabbage requires a good growth space, to be able to fully absorb the sun, fully improve the individual development, in order to take into account and coordinate the normal development of individuals and groups, in the planting density should be a reasonable arrangement. For early-maturing individuals, small-sized varieties usually have 4000-5000 transplanted plants per acre, medium-cultivated implements have about 3,000 acre per mu, and individual large late-maturing plants have about 2000 plants per acre. In this way, the sun can be fully utilized to alleviate the conflicts between the seedlings to win light, compete for water, and compete for fertilizers, and problems such as the emergence of tall seedlings, yellow leaves, and postponement of ball-bearing are avoided. Furosemide Inj,Methyldopa Tablets,Lisinopril Dosage Range,Methyldopa 250 Mg Tablet NINGBO VOICE BIOCHEMIC CO. LTD , https://www.medicine-voice.com