1. The worm pupae in the tomato field, the teachers help to see what kind of pupae this is, which teacher knows to talk about it, do not know whether it is a beneficial insect or a pest?
Dr. Farmer Expert Answers:
Hello, judging by the situation on the picture, judging from the shape of the pupa, this is a kind of pupa, which should be a fly larval pupae, you first collect the pupa and put it in the mineral water bottle, in the plus part of the soil, put to see the later adult form, please pay attention to observation, timely prevention and control.
2. The rod is long and the leaves are curly, what happened to the pineapple? Ask the teachers to help you take a look.
Hello, spinach slender rod on the picture, leaf curl color dark green, should be high temperature in the early stage, hypertrophy (excessive application of nitrogen fertilizer) caused by the growth, these two days of cooling, low temperature effect caused by the early boom and late low temperature effect, weak light, night temperature is too high caused by the length of the apprentice, the leaf curl is a low temperature obstacle. During the cooling period of these two days, strengthen the temperature and light during the day, and spray part of the foliar surface after a sunny day with natural brassica and active liquid fertilizer containing fulvic acid or alginic acid for mitigation, spray once every 7 days, spray 2 times continuously.
3. Ask the teachers for guidance, cucumber grafting pumpkin rootstock, just recently happened, what's wrong?
Hello, look closely at your seedlings, mainly in the true leaf edge appear dry, should be too dense, the hole plate is too small, humidity is large, high temperature, air circulation is the cause of this disease. Pay attention to the selection of a suitable seedling bowl after the time, disperse it, in the case of sunny weather, timely ventilation and moisture drainage, pay attention to the water droplets inverted to the leaves to form burn spots, this situation disperses the seedling bowl, spray some natural algic acid for repair.
4. After clicking, how did the flower and fruit handle become ninety degrees? Please ask what is going on
Hello, look at the photo is caused by the concentration of anthers, tomato flowers to grasp the concentration, when the temperature is high, the potion is diluted a little. The handle is best applied at 8-10 a.m. on a sunny day, dipping a small amount of liquid with a brush and tapping at the newly opened female flower peduncle or gently applying to the peduncle. If the temperature in the shed is low and there are fewer female flowers in bloom, you can flower every 2-3 days; if the temperature is higher, the female flowers bloom more, you can flower every 1 day or every day.
5. What is the disease of the yellow of the wheat seedlings piece by piece, will spread the disease, what medicine is good to use, please answer the expert?
Hello, you this is from the aboveground part of the leaf began to yellow, like the spraying of herbicides improperly caused by yellow leaves, recently many farmers in the wheat area are reacting to their own wheat field yellowing seriously, ask for advice on prevention and control measures, your planting is still very dense, coupled with the early winter cold damage, if you previously hit the herbicide, now the temperature rises, the early affected leaves in the process of rejuvenation will be yellowing and shrinking in a large area, it is recommended to use bi care + cell division agent + amino acid foliar fertilizer + zinc spray control in the near future, In the later stage, add some agents to prevent dwarf mosaic virus (such as mushroom proteoglycans (or shiitake polysaccharides), amino oligosaccharides and other agents) at intervals of 5-7 days and spray again, spray 2-3 times to promote remission.
The content of the article is comprehensively compiled from the Farmer Doctor APP, please indicate the source when reprinting.
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