Maize ear period refers to the corn from the jointing stage to the tasseling stage, which is the vegetative and reproductive growth stage. It is also a critical period for water demand and fertilizer, and it is a key period in corn life. The main objective of the field management at the earing stage is to make the maize plants thick and strong, and the leaves grow vigorously and vigorously. The vegetative growth and reproductive growth are coordinated to achieve strong stalks, large spikes and many grains. Therefore, the management of field management at the earliest stage is the key to seizing the high yield of summer corn. Specific management measures are as follows. First, remove the weak strain, cultivating roots. For those small strains, weak strains and ineffective strains, they should be removed as soon as possible. Heading usually 1-2 times. After the trumpet period, the cultivator should be shallow to protect the roots. Second, heavy ear fertilizer. Top dressing time is generally good for big bell seasons. The method of fertilization is: in combination with cultivating soil, between the two plants 15 to 20 cm away from the corn, deepen 6 to 10 cm deep, 3 to 4 cm in diameter deep, apply 40 kg/mu of nitrogen fertilizer, and apply the fertilizer into the hole. , and then earth. Third, watering and irrigation. Two times of water should be filled in the ear of maize: Before and after the big bell, the irrigation should be combined with topdressing. The second time before and after tasselling, the amount of irrigation is generally large. If there is excessive rainfall and soil moisture is excessive, drainage should be promptly prevented. Fourth, timely control of pests and weeds. The major diseases in the ear stage of summer maize include large leaf spot, small spot disease, and rust disease. Prevention of large spot, small spot disease, can be used in the early onset of 10% Shigao, 50% acetaminophen or 70-agent Mn-Zn spray fungicide, interval 7 days, continuous application of 2-3 times. The control of brown spot and rust can be controlled with 25% triadimefon 1000-1500 times or 50% carbendazim 500 times in the initial stage of disease, with an interval of 5-7 days and even 2-3 times. At the peak of the spores, spray with 97% diuretic stock 250-300 times or 50% with WP wettable powder 800 times, once for 7 days, even for 2-3 times. In the jointing period and before and after tasselling, spraying 10% double effect Ling 200 times, can effectively control corn stalk rot. Summer corn pests are mainly corn borers, aphids, and red spiders. Prevention of corn borer, can be used in the small bell mouth, big bell mouth with 1.5% phoxim granules 0.5 kg of fine sand mixed with 7 kg, scattered into the heart leaves, the amount of strain 1.5-2 grams. Can also be used 90% crystal trichlorfon 1500 ~ 2000 times; or 75% phoxim EC 3000 ~ 4000 times Irrigation or ear tip irrigation, 10 ml per pot. Control of aphids, 40% omethoate EC 1500 times, or 10% imidacloprid WP 1000 times, or 50% WP 2000 times, or 10% beta cypermethrin EC 1500 times. For the control of red spider, avermectin (1.8% Insox, 1.8 Aifu, 0.9% Qi Qi Su) 2000-3000 times, or 20% Zhi Ling 2000-3000 times, or 10% Liuyang Mycoides 1500 times liquid spray control. In the middle and late stages of corn growth, 20% paraquat aqueous solution can be used to kill grass. radiopaque adhesive tape,Radiopaque Tape,Medical Tape Anesthesia Medical Co., Ltd. , https://www.trustfulmedical.com
Field Management Techniques in Summer Maize Ear
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