First, the spring wheat field management
1ã€Drawing at a proper time, deepen the sturdy seedlings, and promote strong seedlings to grow early, Wang Miao turns strong. From the top soil of the soil to the jointing period of wheat, we should draw 2-3 times and grasp the principle of “shallow over the head, deep over the second time, and not hurt the root after three timesâ€. To draw, draw, draw through. Especially after watering or after raining, take care of loose soil. In the wheat fields with loose soil and a large amount of dust, the combination of repression and ploughing can be carried out, and the pressure can be applied first. After the deep sowing of the wheat field is returned to green, the clearing and ridge clearance will be combined in time to make the tillering section shallow, so as to facilitate warming and increasing the temperature, but do not expose the tiller section to the ground to prevent freezing damage.
2, classification management, scientific application of fertilizer. (1) Prosperous wheat fields, fertilizer and water management to control the main, postponed watering time postponed until the jointing stage, in order to prevent leggy, anti-lodging, panicle large grains, can be combined with pouring water, urea recovery 10-12.5 per mu kilogram. (2) In the late summer wheat fields, the population is small and the individual growth is weak. The spring management should be based on promotion. During the period of returning to soil, the top dressing is applied, and 12.5-15 kg of urea is applied per mu. In the early stage of returning green, we timely cut the loose soil, increase the low temperature, and promote root growth. Watering in the period of getting up (mid-March) is conducive to tillering and the number of grains per spike. (3) Small medium-sized wheat fields, with fertilizer and water management as the main factors, should be returned early to return green manure, use the topdressing fertilizer in the soil return season, apply 15-17.5 kg of urea per acre, and water it in the standing period. (4) Appropriate strong seedlings for wheat fields, fertilizer and water management must be combined and controlled. Return to the green period to control the spring tiller, only scratch the loose soil without top-dressing and watering, in order to reduce the invalid childbirth, promote the healthy growth before delivery. In the jointing period (early April), topdressing watering, applying 15-17.5 kg of urea per acre.
Various types of wheat fields in the flag-waving period of wheat crops are topped with 5 kg of urea to prevent later defertilization and affect the wheat grain weight.
3, promotion and control technology, prevention and control of late lodging. For some of the groups (larger than 900,000 per acre stem), there is a lodging trend of wheat, in addition to the replanting stage to carry out the deep-rooted cutting off the root, can be sprayed in the rejuvenation period to Zhuang Fengan, paclobutrazol and other plants Growth regulators have a good effect on controlling the growth of the base section too fast and preventing lodging. Zhuangfengan uses 30-35 ml/mu and water 40-50 kg. Paclobutrazol uses 15% of powder 30-40 grams per acre and 30 kg of water. Pay attention to uniform spray, prevent re-spray and spray.
4, timely control of pests and weeds. Yellow, from the dwarf disease in the early March with 40% of dimethoate 40-50 ml, watered 30-40 kg spray control. Wheat sheath blight kills 40-50 milliliters per acre with jade bacteria in the beginning of April to early May. Watered 50 kilograms of wheat stalks are sprayed at the base of stems, and sprayed once every 10-15 days. Control of aphids with imidacloprid or acetamiprid wettable powder 10-15 grams per acre, watered 40 kg spray.
In addition to weeding in the wheat field, weeds are sprayed with diluted 10% tribenuron-methyl per acre or 30-40 kg diluted with 1 g of superstars.
I. wheat late wheat management
1, pouring a good flag water, top dressing as appropriate. In the flag-raising period, it is the main task of wheat management in this period to increase grain re-gravity. Flag-capturing period is also the critical period of wheat water demand. At this time, irrigation is beneficial to reduce the degradation of small flowers, increase the number of grains per spike, and ensure deep water storage in the soil for later absorption and utilization. The fertile plots and the wheat fields with weaker plant growth can be combined with 7.5-7.5 kg urea per mu in the pouring period.
2, according to local conditions, pouring a good pouring grouting water. About 10-15 days after the flowering of wheat, the slurry should be poured in time. During this period of watering, special attention should be paid to weather changes. Watering in windy weather is strictly prohibited to prevent lodging. Within 7-10 days before harvesting, avoid pouring wheat yellow water.
3. Foliar fertilizer is applied as appropriate to extend the leaf functional period. Foliar dressing can not only make up for the lack of root absorption, meet the nutrients needed for wheat growth and development, but also can improve the field microclimate, reduce the damage of dry hot wind, enhance the function of leaves, delay aging, increase the speed of grain filling, and increase grain weight; Can significantly improve wheat grain quality and increase bulk density. From the booting stage to the initial stage of grouting, the spraying concentration is 1%-3% urea solution, 0.2%-0.3% potassium dihydrogen phosphate solution, spray 50-60 kg per mu. 24 hours after spraying, if there is rain, it should be sprayed once.
4, do a good job in forecasting and timely control of pests and diseases. After the wheat flag was taken, it was the main period when various pests and diseases occurred. Diseases and insect pests mainly include wheat aphid, rust, powdery mildew, head blight, etc., and do a good job of forecasting and forecasting, and pay attention to the dynamics of pests and diseases at any time. If the prevention and control indicators are met, pesticides can be used for early prevention and control. Prevention and treatment of rust and powdery mildew can be sprayed with 50% triadimenin 50 kg per mu for 30 kg water. To prevent scab, if the rain falls, it can be sprayed with 50% carbendazim 100 g/mu and 30 kg water before rain or after rain.
5, timely harvest, timely drying after closing. Wheat is the best time for harvesting at the end of waxing and should be harvested in time. Dry in time after harvest. High-quality special wheat also pay attention to the harvest when the single income off, alone drying, single storage transport, prevent mixing.
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