The 75th Mission is located at the northwestern border of our district, with an elevation of 1700-1800 meters, an average annual temperature of 23°C, a growing period of more than 10°C, a accumulated temperature of 1303.4°C, an average annual rainfall of 512.2mm, a frost-free period of about 85 days, and a climate in semi-arid and sub-humid climates in temperate mountain areas. Cool climate. This kind of climatic conditions can prolong the maturation period of rapeseed pods, which is conducive to stable production and high yield of rapeseed.
Rape is the pillar industry of the planting industry in Zhaosuyu District, and rapeseed area accounts for more than 60% of the cultivated area in the past years. In recent years, the promotion of excellent varieties has greatly increased the yield of rapeseed, which has played a decisive role in increasing the income of our staff and the synergy of the group. In 2004, rapeseed production in Zhaosuyu area generally declined, and rapeseed falling buds, buds, and segmented knots achieved more serious images, resulting in a large area of ​​rapeseed production.
First, the reasons for generating segmentation
1. Effect of adverse environmental conditions The optimum temperature for the flowering and knot angle of rapeseed is 18-22°C on average. If the temperature exceeds the suitable range, the temperature higher than 25°C will cause the abnormal development of the flower organ structure and the petal shrinking. . At the same time, if the climate is dry, photosynthesis and transpiration will be unbalanced. When the temperature is lower than 9°C, it will affect the normal insemination and pollination, the pollen viability will affect the normal development of the ovule, the inflorescence of the flowering flower will be poorly inseminated, and the invaginous or non-seedless culprit will be produced, which will appear on the inflorescence spindle. The phenomenon of a normal junction angle, detachment of a flower bud, and segmentation is strong. At the same time, the high temperature and little rain during flowering period of rapeseeds and the continuous drought caused the abnormal development of flower organs, and they could not bloom normally. Therefore, the bad weather such as high temperature, low temperature, rainy weather and continuous drought will cause the rape buds to fall off.
2. Boron-boron rape is a crop that requires more fertilizer and stronger fertility. Breeding intensity of rape during flowering is large, especially in flowering period, it needs to consume a lot of nutrients. When the supply of nutrients is insufficient, flower buds will fall off. Especially in the case of boron deficiency, the growth of rapeseed is hindered and the insemination is affected by the powder, resulting in unreal flowers, reduced seed setting rate, or insufficient grain.
3. Improper cultivation and management Improper planting density, premature shade of flowers and fruit plants, poor ventilation and light transmission, poor development of the lower part of branches, too much or too little soil moisture and fertilizer, partial application of nitrogen fertilizer, etc. can lead to budding Fruit shedding and indefinite pods increased, segmented and fruitful.
4. Harm of diseases and insect pests The rapeseed disease in Zhaosuyu District is mainly Sclerotinia. The perennial strains are 8% to 30%, and the yield is generally reduced by 10% to 30%. In the period of flowering and podging of rapeseed, it occurs in the middle and lower part of the main stem of the plant. The diseased stem turns into white and the marrow evaporates, which hinders the transport of water and nutrients and causes the buds to fall off and part of them to die. When the rape grows too prosperous and lodging, the disease is even more serious. Insect pests mainly consisted of fleas, roundworms, stems, and tails. They could be jeopardized during seedling emergence and flowering of rapeseed, and were severely reduced.
Second, measures to prevent fragmentation
1. Appropriate early sowing, cultivating seedlings that are suitable for early seeding of strong seedlings, and having a longer seedling growth period, can make rapes form larger vegetative bodies. The inflorescence and flower bud differentiation of rapeseed, the number of pods per plant and the number of pods increased significantly. The seeding period of early sown rapeseed was slightly advanced, and it could avoid the adverse effects caused by high temperature and drought during the flowering period, and there were many branches, the results were many, many grains were more, the buds with invalid buds were less, and the yield was high. Zhaosu region sowing time is generally in mid-April, sowing should be shallow should not be deep, sowing depth of 2 to 3 cm is appropriate. When sowing, it is to achieve the “24†standard, broadcast all seedlings, strive for Miao Qi Miao Zhuang, and lay a good foundation for high yields.
2. Reasonable fertilization Reasonable formula fertilization, to prevent partial nitrogen fertilizer, pay attention to increase phosphorus, potassium, boron fertilizer. In the case of applying adequate basal fertilizer with good seed fertilizers, the combination of the application of boron fertilizer at the end and the boron fertilizer during the flood season can effectively prevent flowering. In the rapeseed convulsions period and about 3 cm in height, spraying 0.1 to 0.3% boron fertilizer per 667 square meters is an effective measure to prevent rape seedlings from becoming solid, increase the number of knots per plant, and prevent flowering.
3. Establish a good population structure and close planting, make full use of resources such as light, heat, water, and fertilizer, and adopt the means of increasing production in the “medium groups, strong individuals, conformal numbers, and increased grain numbers†to achieve full coordination between groups and individuals. The field density should be based on different soil conditions, species characteristics and sowing date, and should grasp the principle of thin field, dense soil, suitable field, early maturity, and late ripening. The appropriate amount of 667 square meters for rapeseed sowing is 400 grams, and the number of seedlings is 3.5 to 4.5 million strains.
4. To strengthen the ecological monitoring of the occurrence of Sclerotinia sclerotiorum has become an important factor limiting the high yield and stability of rape. For prevention and treatment of rapeseed sclerotinia disease, we must conscientiously implement the principle of "prevention first, comprehensive prevention and treatment". The first thing to do is to take turns and avoid continuous production. The second is the selection of disease-resistant varieties, seeds without bacteria, the field is not covered. In the rape bud stage to the early flowering stage, spraying 70% thiophanate-methyl wettable powder 70 grams or 10 grams Haolix, can effectively control the occurrence of Sclerotinia. During the period from bud to flowering, if there is the occurrence of exposed armor and aphids, 35% Saitan oil 80 ml/667 square meters can be used for prevention and treatment.
5. During the flowering period of the second-stage rapeseed, it is possible to improve the microclimate in the field by irrigation, so as to make it become a low-temperature and humid environment, prolong the flowering time, increase the inflorescence of the fruit, and reduce flower buds. However, the amount of watering in the later period should not be large, so as to avoid causing late-growth greed, it is not appropriate to water in stormy weather to avoid lodging.
6. Reasonable and reasonable rotation, to avoid heavy smashing, eliminate sterilization source. Use straw to return soil, improve soil physical and chemical properties, increase soil permeability, increase soil fertility, and achieve autumnal fall after harvest of autumn and winter crops, which is conducive to water storage and soil conservation, promote soil maturation, and facilitate root growth. The land will be put into a state to be laid so as to lay the foundation for rapeseed production in the coming year.
7. Breeding fine varieties of good varieties is the guarantee of high and stable production of crops. The seeds are full, strong in life, and high in yield, and they are neat and robust after sowing. The use of coated seeds with stronger resistance to disease can effectively prevent the harm of rape seedlings in seedling stage to facilitate the normal growth of rapeseed. Such as: 912, 303, China Association 1, Qingyou 14, etc. These varieties are high-yield and high-quality varieties, strong growth potential at the seedling stage, broad leaves, dark green leaves, tall plants, strong productivity per plant, disease resistance Strong resistance to lodging, with strong potential for yield increase.
8. Weeds and weeds in rapeseed fields are dominated by mono- and dicotyledonous weeds such as wild oats, wild oilseed rape, and bittersweet. The use of high-efficiency schizophyllum, C. variabilis, G. In addition to the force, combined with artificial grasses, weeds are kept free from weeds. Avoid weeds and crops to win light, heat, water, and fertilizer, promote robust growth of plants, increase branching, and lay a good foundation for high yields. For plots with large population density, spraying paclobutrazol to control the plant height, increase the number of branches, reduce branching sites, prevent lodging, increase granules and increase grain.
Deltamethrin 5% solution
COMPOSITION
Each ml contains: Deltamethrin 50mg
INDICATIONS
Deltamethrin 5% solution is used as a topical application for the control of lice and flies on cattle; ticks, lice, keds and established blowfly strike on sheep and lice and ticks on Lambs.
DOSAGE AND ADMINISTRATION
Route: For external topical use.
Apply the recommended dose by pouring it along the animals spine from the base of head to the tail. For sheep, it is recommended that the fleece is parted during administration.
Flies: One single application provides protection against flies for 6-10 weeks depending on the degree of infestation, fly species and weather conditions.Lice: One single application is generally enough for 8-10 weeks protection, but in cases of heavy infestation it may be necessary to repeat the treatment after 4-6 weeks. All in contact animals must be treated at the same time.
ADVERSE REACTIONS
Minor signs of discomfort have been seen in some cattle during the 48 hours after treatment. This is of no long term detriment to the animal.
WITHDRAWAL PERIOD
Cattle: Meat: 17 days; Milk: Zero hours
Sheep: Meat: 35 days
This product is not authorised for use in ewes producing milk for human consumption.
STORAGE
Store bellow 30ËšC, protect from direct sunlight, preserve in tight containers.
VALIDITY
3 years.
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Hebei Kexing Pharmaceutical Co., Ltd. , https://www.kexingpharma.com