Since the beginning of winter, the temperatures in various places have been slightly higher than normal years. People often call such years “warm winter†years. So, what are the adverse effects of warm winter on rapeseed growth? Dong Zhensheng, a rapeseed expert from the Agricultural College of Northwest Agriculture and Forestry University, said that high temperatures in the winter are extremely unfavorable to some short- and early-broadcast rapeseeds. Therefore, if growers want to seize next year’s rapeseed harvest, they must pay attention to warm winter rapeseeds. Field management work. In response, he made the following suggestions for each grower.
Strengthen Winter Irrigation and Drought Resistance
Dong Zhensheng said that at this stage, rape in some places is already out of moss, such as in southern Shaanxi, and this phenomenon of early outbreak of moss has an impact on the yield in the later period.
In light of the correct field management of rapeseed in warm winter years, Dong Zhensheng’s primary recommendation to all growers is to strengthen winter irrigation. He said that the best time for winter irrigation of oilseed rape is from late December to early January, rape in the winter is extremely vulnerable to frost damage, and in the case of drought and frost damage, it can easily cause dead seedlings. The main reason for dead seedlings is that the rapeseed is basically not growing in the winter, but it still needs to breathe, it needs to consume oxygen, and the drought makes it difficult to breathe. After the rape has consumed its own nutrients, the dead seedlings are prone to happen. The situation can be better in a canola field. Therefore, Dong Zhensheng suggested that if there is conditional irrigation, strengthening the winter irrigation work must mention the field schedule of winter rape field management. However, winter irrigation should pay attention to methods. For no-tillage rapeseed in paddy field, it is suitable for irrigation and drought resistance. It can adopt furrow irrigation method to prevent submergence, flood irrigation and long-term irrigation to avoid soil oxygen deficiency. For land plots where there is no water or irrigation costs are too high to allow winter irrigation, fulvic acid can be sprayed on the leaves of rapeseed.
Strengthen loose soil antifreeze
Loose soil can improve the ventilation performance of the soil, coordinate the conflicts between water, fertilizer, gas and heat, and is conducive to the formation of strong seedlings. Rapeseed has a well-developed root system that not only improves antifreeze capacity, but also absorbs deep soil moisture and improves drought resistance. Under conditions of conditional irrigation, we can dig deep into the rows of oilseed rape after watering and soil moisture is good, creating a good soil environment for root growth. Plowing rapeseed field, shallowly ploughing soil and breaking up soil blocks can reduce large gaps in the soil and reduce soil moisture evaporation. In the early dry period, it is necessary to pay attention to methods and improper methods for cultivating rapeseed, which is counterproductive. Shallow can be done first, cut off the capillary, reducing evaporation. The cultivator time should be selected during the high temperature period before winter to prevent cold weather from invading the rape root system.
Covering the rows with rice straw, wheat straw, and leaves can effectively reduce the evaporation of soil moisture. This method can not only resist drought, but also has a significant antifreeze effect on rape.
Strengthen fertilization
In addition to strengthening the winter irrigation work, Dong Zhensheng said that proper application of fertilizer to fields that can be watered has a better effect on rapeseed growth. For thin, young, prematurely grown vegetables, applying some available nitrogen fertilizer can make up for the nutritional deficiencies in the rapeseed, prolong the vegetative growth and reduce the flowering speed of bolting. Dong Zhensheng reminded growers that the amount of nitrogen applied in winter is no more than 10 pounds per mu.
Strengthen pest prevention
In terms of preventing insect pests, Dong Zhensheng said that the prevention and control of rapeseed pests began in the beginning of spring. After turning rapeseed green, special emphasis should be given to the prevention of insect pests and vegetable stems like beetles. Among them, vegetable stems like beetles mainly control adults, and winter irrigation is extremely beneficial to kill the insects. The high temperatures in the winter can make the locusts more serious, causing lean, yellow crops and viral diseases. Control locusts to do timely application and symptomatic remedy.
In addition, the yellow and old leaves of the base of the rape must be removed in time, and the removed leaves must be taken to the field for centralized treatment. Practice has proved that the removal of yellow, old, and dead leaves not only has little effect on the yield of rapeseed, but also has the advantages of reducing disease, improving ventilation and light transmission, and increasing quality organic fertilizer.
The function of sessile leaves of rape after spring is enhanced, so the yellow leaves and old leaves at the base of the rape plant should be removed in time. Generally, 2 to 3 leaves are picked, and 2 to 3 long-handed stalks are picked at the base, and then proceed step by step. The full yellow leaves of the lower part of the plant can be picked up by the flowering stage. When the leaves are picked up, no stalks are left or stalks are damaged. In this way, the ventilation and light transmission conditions can be improved and the occurrence of diseases can be reduced. For the leaves taken off, they must be taken to the field for centralized treatment.
Strengthen Winter Irrigation and Drought Resistance
Dong Zhensheng said that at this stage, rape in some places is already out of moss, such as in southern Shaanxi, and this phenomenon of early outbreak of moss has an impact on the yield in the later period.
In light of the correct field management of rapeseed in warm winter years, Dong Zhensheng’s primary recommendation to all growers is to strengthen winter irrigation. He said that the best time for winter irrigation of oilseed rape is from late December to early January, rape in the winter is extremely vulnerable to frost damage, and in the case of drought and frost damage, it can easily cause dead seedlings. The main reason for dead seedlings is that the rapeseed is basically not growing in the winter, but it still needs to breathe, it needs to consume oxygen, and the drought makes it difficult to breathe. After the rape has consumed its own nutrients, the dead seedlings are prone to happen. The situation can be better in a canola field. Therefore, Dong Zhensheng suggested that if there is conditional irrigation, strengthening the winter irrigation work must mention the field schedule of winter rape field management. However, winter irrigation should pay attention to methods. For no-tillage rapeseed in paddy field, it is suitable for irrigation and drought resistance. It can adopt furrow irrigation method to prevent submergence, flood irrigation and long-term irrigation to avoid soil oxygen deficiency. For land plots where there is no water or irrigation costs are too high to allow winter irrigation, fulvic acid can be sprayed on the leaves of rapeseed.
Strengthen loose soil antifreeze
Loose soil can improve the ventilation performance of the soil, coordinate the conflicts between water, fertilizer, gas and heat, and is conducive to the formation of strong seedlings. Rapeseed has a well-developed root system that not only improves antifreeze capacity, but also absorbs deep soil moisture and improves drought resistance. Under conditions of conditional irrigation, we can dig deep into the rows of oilseed rape after watering and soil moisture is good, creating a good soil environment for root growth. Plowing rapeseed field, shallowly ploughing soil and breaking up soil blocks can reduce large gaps in the soil and reduce soil moisture evaporation. In the early dry period, it is necessary to pay attention to methods and improper methods for cultivating rapeseed, which is counterproductive. Shallow can be done first, cut off the capillary, reducing evaporation. The cultivator time should be selected during the high temperature period before winter to prevent cold weather from invading the rape root system.
Covering the rows with rice straw, wheat straw, and leaves can effectively reduce the evaporation of soil moisture. This method can not only resist drought, but also has a significant antifreeze effect on rape.
Strengthen fertilization
In addition to strengthening the winter irrigation work, Dong Zhensheng said that proper application of fertilizer to fields that can be watered has a better effect on rapeseed growth. For thin, young, prematurely grown vegetables, applying some available nitrogen fertilizer can make up for the nutritional deficiencies in the rapeseed, prolong the vegetative growth and reduce the flowering speed of bolting. Dong Zhensheng reminded growers that the amount of nitrogen applied in winter is no more than 10 pounds per mu.
Strengthen pest prevention
In terms of preventing insect pests, Dong Zhensheng said that the prevention and control of rapeseed pests began in the beginning of spring. After turning rapeseed green, special emphasis should be given to the prevention of insect pests and vegetable stems like beetles. Among them, vegetable stems like beetles mainly control adults, and winter irrigation is extremely beneficial to kill the insects. The high temperatures in the winter can make the locusts more serious, causing lean, yellow crops and viral diseases. Control locusts to do timely application and symptomatic remedy.
In addition, the yellow and old leaves of the base of the rape must be removed in time, and the removed leaves must be taken to the field for centralized treatment. Practice has proved that the removal of yellow, old, and dead leaves not only has little effect on the yield of rapeseed, but also has the advantages of reducing disease, improving ventilation and light transmission, and increasing quality organic fertilizer.
The function of sessile leaves of rape after spring is enhanced, so the yellow leaves and old leaves at the base of the rape plant should be removed in time. Generally, 2 to 3 leaves are picked, and 2 to 3 long-handed stalks are picked at the base, and then proceed step by step. The full yellow leaves of the lower part of the plant can be picked up by the flowering stage. When the leaves are picked up, no stalks are left or stalks are damaged. In this way, the ventilation and light transmission conditions can be improved and the occurrence of diseases can be reduced. For the leaves taken off, they must be taken to the field for centralized treatment.
Anti-Tumoror anti-cancer Intermediates belongs to a class of relatively small products in my company, but we still put large effort and more financial resources to develop those products. We firmly believe that Anti-Tumor Intermediates has big market demand in the future, because currently the internal growth of tumor diseases is fastly spreed in the worldwide, particularly It is becoming a threat to the survival of number one killer in Asia. Every year we will launch a new Anti-Tumor Intermediates, Dolutegravir intermediates are the most representative latest intermediates. We can provide the entire product line from basic raw materials to intermediate and API, in addition we can offer full range of impurities. we can offer customers free of impurities under commercial orders, which has great significance in applying for approval of the product.
Anti-Tumor Intermediates, Anti-Cancer Pharmaceutical Intermediates,Cancer Cell,Antitumor and Anticancer Drugs
Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com