Ten Ways to Prevent Premature Aging of Fruits and Vegetables in Summer

Melons, fruits and vegetables cultivated in summer often appear premature senescence due to various effects. Based on many years' experience in agricultural technology extension and the experience of professional households, the author puts forward the following technical points to prevent the premature senescence of over-summer melons and vegetables.

First, early seedling anti-apprentice growth: summer melons, fruits and vegetables are affected by temperature and humidity at the seedling stage, and many of them grow excessively on the seedling bed: the roots are few and shallow, the stems are thin and long, and the leaves are thin and tender.

In terms of management, we should pay attention to the technical measures that focus on prevention:

(1) spray the roots of seedlings with Zhuang vegetable 6518 or Tianda 2116 Zhuang Miaoling plus carbendazim.

(2) the main watering measure is root irrigation (combined with loosening soil and cultivating soil).

Second, seedling disease should be prevented early: especially root rot, blight and stunting disease. The prevention measures are the same as above.

Third, anti-soaking in rainy days: in cloudy and rainy weather, melon and vegetable roots are invaded by Rain Water, resulting in poor air permeability, resulting in rotten roots and infected with soil-borne diseases. Therefore, when melons and vegetables grow, cultivate the soil shallowly (note: do not carry out at the same time between the rows of plants). It is conducive to drainage, water conservation and less root damage, and adopt the method of ploughing and cultivating diligently for many times. Promote deep and wide root system, delay premature senescence.

Fourth, prevent the harm of salinity: most professional households of melons, fruits and vegetables attach great importance to the application of organic fertilizer (such as raw chicken manure) and chemical fertilizer (such as potash fertilizer). However, it is ignored that raw chicken manure contains a lot of salt (sodium chloride) and potassium fertilizer (potassium chloride, potassium sulfate). Therefore, to prevent salinization, mature organic fertilizer should be selected, chemical fertilizer should be applied a small number of times, especially flushing fertilization is not easy to be used, bio-organic fertilizer should be applied with a certain amount of compound fertilizer. The watering time should be 3-5 days after topdressing.

5. Prevent premature senility caused by fertilizer damage: especially nitrogen fertilizers (urea nitrogen, nitrogenous nitrogen, ammonium sulfate, ammonium chloride), etc., should correctly grasp its characteristics and carry out timely and appropriate amount, so as to avoid burning roots and injuring leaves.

Sixth, timely and appropriate amount of water to prevent premature senility: summer cultivation of melons and vegetables, especially into the fruiting period, such as heavy water irrigation is easy to cause root breathing difficulties, coupled with high temperature in summer, serious flower and fruit drop, affecting the direct economic benefits of farmers. If the fertilization is improper, the consequences will be more serious.

7. Prevention of premature senescence or death caused by drug damage: summer is a frequent season for the occurrence of diseases, insect pests and weeds, especially when herbicides are applied in corn fields, which often affect broad-leaved crops, including trees, and should be prevented except for cultivation in protected areas. Tianda silicone plus special type 2116 can be sprayed in this season, or Nai'an can be sprayed alone to alleviate herbicide damage.

Eighth, prevent the harm of underground pests: the organic fertilizer applied in spring (such as chicken manure) is easy to be eroded by fly mosquitoes and maggots in the hot and rainy season in summer, and some underground pests, such as cultivated eggplant fruits and melons, are easy to be damaged by pests. Therefore, the prevention and control work should not be ignored, it can be combined with flushing fertilization and maggot spirit (or Boya double killing).

9. Prevention of high temperature obstacles: summer melons and vegetables are affected by high temperature in two aspects: first, the ground temperature is high: the method of watering groundwater can be taken to cool it, and it should be watered in the afternoon (or evening). Second, the temperature is high, we can take the method of spraying special Tianda 2116 plus Tianda silicone to strengthen the high temperature resistance of leaves, melons and fruits.

10. Prevention of virus damage: aphids and planthoppers occur seriously in summer, so prevention and control should be strengthened and Tianda Yufeng should be added to restrain it.