Maize ear period refers to the period from the plunge to pumping male. The knuckle is the beginning of a significant elongation between the nodes of the base of the stem, and tasseling means that the tassel (smallpox) begins to reveal the flag leaves (the last piece). 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. Good management of field management at the earliest stage is the key to seizing the high yield of corn. The specific measures are as follows: Deep cultivator Xiaopu soil combined with stalk manure. On the basis of applying basal fertilisers and managing the seedling stage well, before and after plucking, deep plowing (about 10 centimeters) should be done once. The cultivator is particularly important for corn. It can break up the lumps and make the soil in the cultivating layer feasible. Growth and development. To cultivate soil, the soil between the rows is concentrated on the plants to form a small ridge, and the applied culm fertilizer is buried in the soil. The stalked manure is preferably based on cooked manure, compost or livestock manure, and it can also be applied to about 10 kilograms of compound fertilizer per acre. Attention should be paid to the use of small seedlings to promote balanced development throughout the field. Heavy spike fertilizer Gaopu soil. Panicle fertilizer should be applied during the big bell-mouth period of maize. At this time, the top leaves of the corn are shaped like a horn.
About 7 to 10 days before tasselling is a crucial period for determining the size and number of grains of the ear (maize cob). At this time, the growth has a great influence on the yield of corn, and it is also when the corn needs the most nutrients. Generally, panicle fertilizer should be re-applied, accounting for about 60% of the total fertilizer, and quick-acting fertilizer should be applied. Usually 15-20 kg of urea per acre, combined with the soil between the rows (especially the width of the line) to plant on both sides, to achieve the purpose of high soil, while embedding the fertilizer in the soil. However, the proportions of stalk and panicle fertilizers should also be reasonably arranged according to the specific conditions. If the soil fertility is higher, the basal fertilization is sufficient, and the seedlings are in good condition, less stalk fertilization and heavy panicle fertilizer may be used; if the soil fertility is low and the basal fertilizer is used less, If the seedlings grow normally, you can reapply the culm fertilizer and use less panicle fertilizer. Timely prevention of corn borer. Corn borer is the main pest during the corn ear and grain flowering period. It is necessary to conscientiously do a good job of prevention and control work, often with 30% carbofuran per acre 2.5 kg mixed dry fine soil 30 to 40 kg, in the bell mouth period snacks (fine soil must be Dry so as not to be toxic to humans). It is also possible to use 50% Ba Dan powder mix dry ground cake, or 25% enemy kill 20 ~ 40 grams about 70 kg of water spray heart leaf.
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