1, return to the application of green manure
The northern region often encounters arid and rainy weather in spring. At this time, it is necessary to pay attention to the timely replenishment of water to promote normal turf greening. At the same time, it is possible to apply back green manure. The time is generally from mid-February to early March, and it can be combined with watering. The depth of water reaches about 10 centimeters, and the amount of fertilizer used is about 20 grams of urea and ammonium dihydrogen phosphate per square meter, and the application of water and fertilizer should be uniform to ensure that the lawn looks neat.
2. Disease prevention and treatment
Prevention and control of lawn diseases is a very important task. Generally, three consecutive application of pesticides should be prevented. The time is generally from mid-May to early June. The first dose can be 5% Jingjingmycin 500-fold aqueous solution. Spraying was conducted in mid-May; the second dose was 5% Jingjingmycin 500-fold aqueous solution plus 25% metalaxyl WP 800-fold, the time was in late May; the third time The use of 25% metalaxyl WP can be used to spray 800 times, the time in early June, spraying should be continuous, to grasp the time and amount of medication.
3, the lawn should be timely pruning
The height of the lawn is generally controlled at 6-8 cm. If the height is more than 10 cm, the lawn needs to be trimmed. This can prevent the lawn from being wasted on the long leaves and extend the green time as much as possible to avoid premature browning. The construction time must be well controlled and the interval should not be too long, otherwise it will cause excessive trimming and cause alopecia areata.
4, lawn fertilization
In the process of growing grass, nutrients are essential. In different stages, fertilization should be carried out. The school should not be allowed to embark on campus.厥 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 宦勰 家 家 家 龅 龅 龅 龅 龅 龅 龅 arrogance? P>
5, water and fertilizer management
The good growth of the lawn is inseparable from the effective supply of water, but the watering should also pay attention to the amount and frequency. During the period from March to June, it is usually watered once every 10-15 days. As the standard, the depth of more than 10 cm, Li Yu lawn growth, play a role in grass. In mid-November, it is necessary to pour enough frozen water, and whether the soil moisture is sufficient to directly affect the smooth overwintering of the lawn directly affects the return to the green and the growth of the next year.
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