“Rapeseed is susceptible to freezing in the winter, and its plant growth is hindered after freezing, resulting in physiological disorders, planting injuries, and susceptibility to disease, severely resulting in dead seedlings, the formation of missing trees, and broken ridges.†Recently, Naxi District, Chenzhou City A group of 13 rapeseeds in Baihe Village, Fengle Town, Zhang Liangqiong, head of Fengle Township Agricultural Technology Service Station explained to the villagers about wintering management techniques of rapeseed.
Roots of cultivating loose soil
Rape must do a good job in cultivating soil, field management; do a good job of checking seedlings to fill seedlings, remove the thick and thin; and grasp the re-application of wax fertilizer, antifreeze and disaster reduction, pest control and drain ditch and other links. In this way, it can promote the normal growth and development of rapeseed, accumulation of more nutrients stored to ensure that the whole seedlings, strong seedlings, safe winter.
The cultivating loose soil should master the principles of early soil loosening and ground loosening, and should be matched with measures such as fertilizing and rooting. The time, number, and depth of ripping should be based on the growth of the rapeseed, soil conditions, climate characteristics, and weed growth. In colder winter months, deep cultivators are generally not suitable for freezing and moisturizing. When cultivating loose soil, it is necessary to pay attention to the roots of cultivated earth to enhance the cold resistance of rapeseed.
Seedlings fill seedlings to move thick and thin
According to the growth of rape seedlings, the principles that should be mastered for rapeseed seedlings and nursery seedlings are: keep thin and thin, stay weak and strong, and adjust the distance between the plants to maintain evenness. It is necessary to check the seedlings in the winter and check the seedlings in a timely manner, shift the thick and thin, and transplant them as early as possible, so as to improve the survival rate. For the lack of seedlings, the strong seedlings must be planted in a timely manner to form a reasonable group structure.
Reuse wax fat mastering skills
"A layer of winter fertilizer is a layer of" "a thousand million pouring, not as good as a pot of wax." Before the arrival of the winter, the topdressing wax fertilizer, increased phosphorus and potassium fertilizer, on the one hand can enhance the cold resistance of rape, on the other hand It provides nutrients for wintering and bolting and flowering to ensure balanced growth in the later stages and to achieve a long period of spring hair growth.
Each mu of cooked pig cow manure water 1200-1500 kilograms plus urea 3-5 kilograms of drench or 35% of the compound fertilizer 40 kilograms of litter, can also spray antifreeze, increase soil temperature 2 °C - 3 °C, can Raising the cold-resistance capacity of rapeseeds will have the effect of applying spring flowers in winter.
Fertilization techniques should master the following five aspects of skills: First, see seedlings and fertilizer; Second, see soil fertilization; Third, see the days of fertilization; Fourth, a reasonable mix; Fifth, to prevent fertilizer damage.
Antifreeze, disaster reduction and stable ground temperature
Increase the cover. Before winter, cover rape seedlings with soil fertilizer, grass ash, crop stalks, etc., or squat soil or cover soil in the rapeseed rows. Boil the roots, strengthen the seedlings, cover the roots of the seedlings, thicken the roots, and block the soil. Cold winds invade rapeseeds and increase their ability to absorb heat and resist cold.
At the same time, it is also possible to keep the ground temperature relatively stable, reduce the transpiration of the leaves, avoid the direct damage of the cold air to the blades, and also bridge the earth seams to prevent air leakage. Such as covering rice straw, 200-300 kilograms per acre, not only protect the antifreeze, but also increase the soil organic matter. The straw that covers the surface of the crop can be naturally implemented in the event of rainfall, and generally does not affect the photosynthesis of rapeseed.
When the temperature drops to 0°C, a layer of chaff, ash, etc. can also be sprinkled on the rape leaves to prevent the leaves from freezing. Conditionally, water can be poured before the onset of the cold current to stabilize the temperature and effectively prevent freezing.
Prevent pests and improve immunity
Rape grows strong before winter, individual growth is large, lines are sealed early, and temperature and humidity are high on the ground. In particular, late winter cooling, more rain, warm winter crops of rapeseed field is prone to diseases, from the base of the yellow leaves off, the green leaf area decreased, while the plants shrink until death. Therefore, it is still necessary to prevent and cure rapeseed rape before wintering.
Winter rape pay attention to the control of aphids, cabbage caterpillars, downy mildew. 10-15 grams of 10% for 10% imidacloprid wettable powders for locust control; Sclerotinia sclerotiorum once every 5 days in the early flowering period, 2-3 consecutive treatments, 70% thiophanate-methyl 500-1500 times, or 40% each time Sclerotia net wettable powder 500 times liquid prevention; downy mildew with 72% Kelu wettable powder 1000 times liquid prevention.
Clear trench drainage camp good environment
If long-term waterlogging occurs in field heads planted with rapeseed, it is difficult for rape crops to exert force on the roots, and it is easy to form weak seedlings and yellow seedlings, which will not reach the purpose of winter spring. Therefore, while cultivating soil at the same time, we must clear up the “four ditch†(gutter, gutter, gutter, and drainage ditch), especially the rapeseed in paddy field, and the humidity in the field is large, so we should clean up the “four ditch†so as to ensure that the ditch can communicate with each other. Smooth drainage.
For rapeseed fields with high groundwater level, it is necessary to pay attention to the timely removal of accumulated water in the fields after the rain and snow, so that the water can be drained, the dark water can be filtered, and the rain can only be dried, so that the root development of rape can have a good environment.
Greenhouse Plastic Plastic Clamps
Greenhouse Plastic Plastic Clamps,Greenhouse Structure Connecting Clamps,Agricultural Greenhouses Clamps,Plastic Clamps
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.thgreenhouse.com