Autumn planting sweet corn field management
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First, the scientific fertilization of sweet corn to high yield, in the fertilization technique to grasp the appropriate application of basal fertilizer, early application of Miaofei, enough to apply strong bar fertilizer, re-apply bud fertilizer (panicle fertilizer) fertilization principles. According to different predecessors, the basic fertilizer can be controlled flexibly. After transplanting, 7-8 or 10-12 kilograms of ammonium permanganate and 10 kilograms of phosphate fertilizer should be poured and poured; Miao should be applied early and 6-7 days after transplanting. , Combined with urea cultivating 7.5-10 kg, potassium chloride 5 kg, flushing water to open a hole pouring; 6-7 leaf stage full jointing attack bar fertilizer, mu urea 8-10 kg, potassium chloride 5 kg, open Acupuncture and moxibustion; reapplying puffer, because autumn corn has only one uptake peak, panicle fertilizer should account for more than 50% of the total fertilizer, Mushi ammonium bicarbonate 50 kilograms, mix superphosphate 25 kilograms, open a hole, apply it again Add 5 kg of urea to flush the water, and form a joint ridge to cultivate soil to improve fertilizer efficiency. Second, cultivating earth After mid-August of autumn, high temperatures, thunderstorms, weeds grow faster, while the roots of the corn is a good aerobic, if the soil is compacted, poor ventilation, less lateral roots, no deep rooting, for which many cultivators are required, The cultivator grasps: The principle that the head is shallow, two times deep, three times and four times without damaging the root, combined with fertilization, milling, ditching and earth-cultivation, can prevent lodging and fertilizer play but can also use soil to suppress grass. Autumn maize should be used for drought and seedling protection. It is better to use furrow irrigation instead of slow irrigation. However, it must be drained in time to promote root growth. Third, prevention and control of pests and diseases is an important key to seizing the high yield of sweet corn. The prevention and treatment of insect pests in the panicles of young plants is strictly prohibited by using highly toxic or long-lived pesticides in order to achieve pollution-free requirements. The main insect pest corn borer, also known as borers, larvae borer damage corn. Control methods can be controlled in the end of the heart and the male silk stage can be used Ruijin special 1000-1500 times spray or with 90% crystal trichlorfon 800-1000 times liquid, 50% dichlorvos EC 800-1000 times irrigation, remove the sprayer The head (drip) was sprayed in the horn leaves, 10 ml per plant. Tasseling and silking were sprayed on tassels and corn silk areas. Corn borers, clustered in the heart of the corn at the seedling stage damage, affect the growth and development; damage in the ear stage, and secrete honey dew affect photosynthesis, so that the weight of 1000 grains decreased, the control of aphids can be combined with the prevention and treatment of corn borer, using 10% imidacloprid (again Net) 2000 times liquid spray. Diseases mainly include sheath blight and size spot disease. The control of sheath blight can be sprayed with 5% Jinggangmycin 500 times solution. In the beginning of the disease stage, 50% carbendazim 500 times or 50% trehalose 800 times or 77% can kill 500 times or 70% mancozeb 500 times. Fourth, whole-sweet sweet corn has a strong tillering ability and a large number of branches. Therefore, it is necessary to conduct the whole plant in time, leaving a main shaft for each hole and removing the branch. When the corn silking and heading, regardless of whether there are two ear or three ears per plant, only one upper ear can be removed to remove the lower ear, and the intact three-leaf clover must be kept intact to lay the foundation for the big ear.