So, how to raise yellow warbler flowers? The following Xiao Xiao will give you an introduction to the yellow warbler flower planting methods and pest control it.
How to plant yellow warblers
Sufficient bottom fertilizer, in addition to farmyard manure, 30 kilograms of composite fertilizer per acre should be added.
The border is about 20 centimeters high, 1.0 meters wide, and the ditch is 30 centimeters deep.
Generally early July to the end of October planting, planting 10,000 plants per mu, that is, four rows per bed, plant spacing 25 cm.
After the planting is completed, watering a thorough watering, and then keep dry and wet, not too dry and flooding.
Beginning in mid-August to mid-October, fertilizer is applied every 20 days, mainly potassium nitrate, 20 kilograms per mu per application.
The production process must be centered once, in a sunny day, to ensure that each bush has one or two dozen buds.
After centering, it is necessary to spray a fungicide immediately to avoid the invasion of germs into the wound.
Thereafter, spray three times every seven days, that is, every one day, 10 days before the harvest to stop hitting.
The plant grows to 30 centimeters to start supplemental light, 100 watts per square meter.
Flowers can be harvested when they are about to open, and are cut off directly at the base with scissors.
Packed separately according to the standard, into the cold storage refrigerated waiting for transportation.
Pest control of yellow warblers
I, rust
Rust is a common disease in the production of yellow warblers.
Round yellowish powdery spore mounds are seen on the abaxial surface of the leaf blade, and the corresponding adaxial surface appears as a regressed green spot.
Control methods:
1. Keep the base clean and hygienic, avoid watering in the evening, so that the leaves can not be sufficiently dry.
2. Manual timely removal of diseased leaves.
3. Spray the back of the leaves with 15% powder rusting wettable powder 1000 times at the initial stage, or 50% sulfur suspension 200 times, spraying every 5 to 7 days, spraying 3 times in a row.
Two, leaf spot disease
Disease spots are mostly started by the old leaves, initially the leaves produce purplish red to brown spots.
The spots are nearly round to irregular, and then gradually expand.
Most of the spots fused with each other to form a large spot, and the center of the spot gradually turned brown.
Prevention methods:
1. Pay attention to ventilation and humidity, increase the application of phosphorus and potassium fertilizer, to ensure adequate nitrogen nutrition, improve plant resistance.
Once the diseased plant is found, it should be removed in time.
2. The early stage of the disease can be used 70% diclofenac manganese zinc wettable powder 500 times liquid, 75% Chlorothalonil wettable powder 600 times liquid, every 5 to 7 days spraying, four or five times in a row.
Three, bacterial leaf blight
Leaf tip and leaf edge disease, the first watery green spots, then the spots expand brown, the center is ulcerated, air humidity is brown dry tip.
Prevention methods: initial spraying with streptomycin 3000 times, every 7 days, continuous spraying to control the disease.
Four, whitefly
Methods of control: use yellow sticky boards to kill, or apply imidacloprid, iron sand palms, amidacloprid, methomyl and other agents.
V. Leaf mites
Prevention and control methods: application of keflex, mite absolute, dicofol and so on.
Six, cabbage greenfly, night moths
Prevention and control methods: a variety of scale insecticides are effective, such as organophosphorus, pyrethroids, and so on.
Prevention-oriented, integrated control.
Early detection of early, and carefully remember to use drugs to avoid triggering drug resistance, several kinds of agents in turn.
The above is about how to raise yellow warblers? Yellow warbler flower planting method and pest control details.
In fact, the planting of yellow warbler flowers is not an easy thing, yellow warbler flowers are more prone to diseases and pests, so the control of pests and diseases is very important.