Rape can occur in various growth stages after transplanting. In general areas in the south of Yangtze River, there are more rainwaters in autumn, winter, and spring, especially in the conditions of continuous rain and high groundwater level, rapeseed is more likely to occur.
The occurrence of waterlogging in rapeseed fields can cause the development of seedling roots to be blocked and the plants grow slowly or stagnate. Waterlogging continues to develop, and long duration will result in rotten rot. Waterlogging in the late growth stage of rapeseed is prone to premature aging and lodging. In short, the waterlogging during the growth of rape can lead to plant height, stem diameter, root thickness, root length, number of green leaves, leaf area, dry weight and other degrees of different degrees of reduction, the number of effective branches, the number of pods per plant and the number of grains is different As a result of the reduction in the degree of loss, it ultimately results in loss of production. At the same time, excessive soil moisture and high humidity in the field are conducive to the propagation and spread of various pathogens, and the occurrence and spread of sclerotia, downy mildew, clubroot disease, and weeds, causing secondary disasters.
Practice has proved that the most effective measures to prevent rape waterlogging are to reduce the groundwater level and reduce the soil moisture content. Combined with the application of quick-applied fertilizer at the seedling stage, the plant can promote robust growth, improve resistance to stress, and prevent the occurrence of secondary diseases in a timely manner.
1. Deeply dig the main ditch and gutter, improve the ditch system, and strive to open the main ditch and branch ditch.
2. Take advantage of time cultivating before winter, control weeds, improve soil ventilation, and promote root development.
3. In the case of continuous rainy weather, strengthen the trenches and ditches, ditches and drain water immediately after the rain, so that the rain will stop dry. After the weather turned fine, the cultivator loosened soil in time to keep the soil well ventilated.
4. Apply quick-acting fertilizer. Waterlogging will lead to the loss of soil nutrients, according to seedling growth urea per application of 4 to 6 kg, to promote the growth of winter. At the same time, appropriate amount of phosphorus and potassium fertilizer, enhance plant resistance, per gram of potassium chloride 3 ~ 4 kilograms, or per acre spraying 0.2% potassium dihydrogen phosphate solution or 2% ~ 3% superphosphate solution 50 kg. In addition, the application of a boron fertilizer after budding, spray 0.1% to 0.2% borax solution 50 kg per mu, to prevent "flowers but not real."
5. Prevent lodging. After the waterlogging of rape, the development of the underground is hindered, and in the middle and later stages, it may show “top-heavyâ€. After the spring, on the basis of cultivating the loose soil and cultivating the roots of the soil, the growth regulator is sprayed on the plots with prosperous tendencies in the flood season. . In general, use 15% paclobutrazol WP 50 g water and 50 kg spray per acre to improve plant type and enhance lodging resistance.
6. Prevent secondary disasters from happening. Waterlogging occurs in fields that are prone to downy mildew under low temperature and high humidity conditions, prone to Sclerotinia and hyperplasia in hot and humid conditions. Alternative sunscreen alternate spraying 2 to 3 times carbendazim, thiophanate-methyl, mancozeb and other drug prevention.
The occurrence of waterlogging in rapeseed fields can cause the development of seedling roots to be blocked and the plants grow slowly or stagnate. Waterlogging continues to develop, and long duration will result in rotten rot. Waterlogging in the late growth stage of rapeseed is prone to premature aging and lodging. In short, the waterlogging during the growth of rape can lead to plant height, stem diameter, root thickness, root length, number of green leaves, leaf area, dry weight and other degrees of different degrees of reduction, the number of effective branches, the number of pods per plant and the number of grains is different As a result of the reduction in the degree of loss, it ultimately results in loss of production. At the same time, excessive soil moisture and high humidity in the field are conducive to the propagation and spread of various pathogens, and the occurrence and spread of sclerotia, downy mildew, clubroot disease, and weeds, causing secondary disasters.
Practice has proved that the most effective measures to prevent rape waterlogging are to reduce the groundwater level and reduce the soil moisture content. Combined with the application of quick-applied fertilizer at the seedling stage, the plant can promote robust growth, improve resistance to stress, and prevent the occurrence of secondary diseases in a timely manner.
1. Deeply dig the main ditch and gutter, improve the ditch system, and strive to open the main ditch and branch ditch.
2. Take advantage of time cultivating before winter, control weeds, improve soil ventilation, and promote root development.
3. In the case of continuous rainy weather, strengthen the trenches and ditches, ditches and drain water immediately after the rain, so that the rain will stop dry. After the weather turned fine, the cultivator loosened soil in time to keep the soil well ventilated.
4. Apply quick-acting fertilizer. Waterlogging will lead to the loss of soil nutrients, according to seedling growth urea per application of 4 to 6 kg, to promote the growth of winter. At the same time, appropriate amount of phosphorus and potassium fertilizer, enhance plant resistance, per gram of potassium chloride 3 ~ 4 kilograms, or per acre spraying 0.2% potassium dihydrogen phosphate solution or 2% ~ 3% superphosphate solution 50 kg. In addition, the application of a boron fertilizer after budding, spray 0.1% to 0.2% borax solution 50 kg per mu, to prevent "flowers but not real."
5. Prevent lodging. After the waterlogging of rape, the development of the underground is hindered, and in the middle and later stages, it may show “top-heavyâ€. After the spring, on the basis of cultivating the loose soil and cultivating the roots of the soil, the growth regulator is sprayed on the plots with prosperous tendencies in the flood season. . In general, use 15% paclobutrazol WP 50 g water and 50 kg spray per acre to improve plant type and enhance lodging resistance.
6. Prevent secondary disasters from happening. Waterlogging occurs in fields that are prone to downy mildew under low temperature and high humidity conditions, prone to Sclerotinia and hyperplasia in hot and humid conditions. Alternative sunscreen alternate spraying 2 to 3 times carbendazim, thiophanate-methyl, mancozeb and other drug prevention.
PIV3 Nucleic Acid Test Kit
PIV3 Nucleic Acid Test Kit
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