First, the ditch to prevent stains. Clean up "Three Ditches" in time to ensure smooth drainage and ensure that no water accumulates on the ground after the rain. The second is to apply joint fertilizer. Appropriate amount of jointing fertilizer should be applied timely and appropriately to crops of different seedlings. Specifically, the wheat fields with insufficient population and weak seedlings are required to be applied before the jointing of the wheat in the period from the end of February to the beginning of March when the leaves are green before rain. Joint fertilizer, mu urea 7.5 kg plus potassium chloride 5 ~ 7.5 kg appropriation, conditional farmers can be appropriate to spread farmyard manure or the application of decomposing rare human excrement; Wang, Zhuang Miao field should be in front of jointing as wheat growth Appropriate amount of joint fertilizer application. In order to achieve "long control, long stability, promote the transformation of weak seedlings" effect. The third is foliar dressing. Wheat grows vigorously from jointing to heading, and therefore requires large amounts of fertilizer. If fertilization is insufficient, it is easy to defertilize. This period can be combined with pest control and spraying 2 to 3 times of foliar fertilizer. It can use Shihuilongbao 80g/mu. Nopofeng 40 grams (or 98% of potassium dihydrogen phosphate 200 grams), before and after the spraying interval of 7 to 10 days, can enhance the wheat root activity, improve its absorption, resistance to waterlogging and frost, lodging resistance , Avoid premature aging, but also significantly increase the grain weight. The fourth is chemical weeding. After entering March, many of the early sowed wheat have entered the jointing stage. The late sowing wheat with single and double late rice as the former crop was mostly in the stage of tillering or getting up, both of which are in a period of vigorous growth. The sowing date is early and the wheat field that has entered the jointing stage is not recommended to use herbicides to control grassy weeds. It is only recommended to use Clomazone (chlorofluoroacetic acid) 50 to 60 milliliters and water to 30 kilograms according to the herbaceous grasses. Spray evenly to prevent broad-leaved weeds such as cow's beak, big broccoli, minced rice dumplings, and leeks to ensure safety. The sowing date is late and has not yet entered the jointing wheat field. Controlling the aphid, Japanese alatus, and grass, etc., can be used in weeds at the 3 to 5 leaf stage, and 5% of the oxenone can be used in the weeds. Clodinafop-propargyl) 120 ml, or 15% Gu Sheng (Cytaxothin) 40-50 ml, 3% Shima (Methylsulfuron-methyl) 20-30 ml, 3.6% Fluorescein Disulfone ) 20-25 ml or 7.5% of preferred 7.5% of sulphur-oxime, etc., and spray evenly on water. Prevent broad-leaved weeds such as swine crickets, cattle bred, leeks, minced rice, and big broccoli. Use 15% Chunjie (HCFC) 100ml, or 20% Ruichao Mai (Double Fluoride) Sulfachlor + chloropyridyl ester) 5 ~ 6.5 g + special additives, spray evenly on water. For wheat fields with mixed grasses and broad-leaved weeds, use the herbs mentioned in the above technical measures in combination with the dosage and dosage of the above-mentioned technical measures. The above agents (formulation) and dosage should be 30 kg of water per mu. Evenly spray. Note: The technical requirements for chemical weeding in wheat fields are high. A slight accident may cause damage to crops, but it may cause crops to die. To this end, to remind farmers to carry out chemical weeding must pay attention to the following matters: 1, the preparation of liquid application of secondary dilution method; do not arbitrarily increase the dose, can not be heavy spray or missed spray; pay attention to weather changes, to avoid the cold air Medication before arrival to prevent the occurrence of phytotoxicity; 2. Select sunny wind-free weather to prevent the liquid from drifting to harm other crops. After wheat enters the jointing stage, it is forbidden to use hormone-type herbicides such as 2-methyl-4-chloro, 2,4-D; 3. The Ningmai series and some Yangmai varieties are more sensitive to clodinafop-propargyl, and these varieties need to be used before clodinafop-propargyl ester is used. First, do a small area test, determine the safety and then use a large area; 4, after March 10, prohibit the use of a single agent containing methylsulfuron composition or compound to control weeds in wheat fields. Fifth, pest control. In March, we should focus on prevention and control of “three insects and one disease†(ie, wheat aphid, wheat spider, midge, and sheath blight), and reduce their damage. The control of wheat aphids can be used 50% of the peak (pyridoxime) 5 to 10 grams, or 22% Teflon 5 to 10 milliliters, 40% of the grain 20 grams, 80% of the sharp 6 to 8 grams, 70% of the Amy Le 4 ~ 6 grams, 50% double electricity 20 grams, 15% gold and good 50 ml, etc., 30 kg of water evenly sprayed on the wheat strains. The control of wheat spiders can use 10 ml of bifenthrin EC to 20 ml, or 40% of Hibiscus (chlorpyrifos) or 1.8% of avermectin, etc., and 45 kg of water is evenly sprayed on the middle and lower parts of the wheat plant. The control of wheat midge, in the area where midge often occurs, can be used at the middle of the flood season forecasted by the local plant protection station, with 80% dichlorvos EC 150g, or 40% sirup (chlorpyrifos) EC 200 ml, and fine soil 20 kg. Evenly spread into the wheat field in the evening, and use a rope to pull or shoot the upper part of the wheat plant with bamboo shoots to make the medicine into the soil to kill the insects. After the medicine is watered or robbed before the rain, the effect is better. Prevention and control of wheat sheath blight, can be at the beginning of the jointing of wheat, sheath blight strain rate of 10 to 15%, mu 6% Jinggang esculenta 60 ml, or 14% granule treasure 40 ml, 12.5% ​​Oubo 30 Milliliter, 23% respect 40 ml, 24% Kang Manda 20 ml, 80% tebuconazole 8 g, 30% love seedling 15-20 ml, etc., apply the drug when the morning dew is not dry, or increase the spray properly The amount of liquid to 45 kg, so that the liquid can contact the wheat base. The first intensive treatment of the severe ward is followed by 10 days of anti-prevention to improve the control effect. frozen cutted swimming crab Delicious Swimming Crab,Fresh Delicious Swimming Crab,Frozen Cutted Swimming Crab,Fresh Frozen Cutted Swimming Crab Zhoushan Junwei Aquatic Products Co., Ltd. , https://www.junweiaquatic-intl.com
March Wheat Field Management Points