Melon can not only be eaten as a vegetable, but also can be processed into various types of candy and other uses. Therefore, it is widely planted in various parts of China. The adaptability of wax gourd is relatively strong, but because many farmers use extensive management and continuous cropping, the phenomenon of not producing new roots of wax gourd is relatively common, which has a certain impact on yield and quality.
First, melon is a thermophilic heat-resistant vegetable that grows well at higher temperatures.
When the light is weak and the humidity is high, it is susceptible to freezing. The suitable temperature for growth and development is 25-30°C, the suitable temperature for seed germination is 28-30°C, and the lowest temperature for root growth is 12-16°C. If the temperature is too low, the differentiation of root melons of melons will be severely affected. There will be difficulties in slow seedlings, no new roots, and serious deaths. Therefore, to strengthen the light, increase the temperature (inside the shed), and promote the growth of melon melon root. In the event of rainy weather, the temperature can be increased by supplementing the light, so as not to cause a new root of wax gourd when the temperature is too low.
Second, wax gourd is not a new root is also related to fertilizer management, fertilizer management is an old topic.
The application of unfamiliar organic fertilizer will cause burning of roots and burning of seedlings in the process of liberation and heating; excessive application of chemical fertilizers will tend to increase the concentration of ions in the soil and will cause water wall separation of wax gourd cells. Caused no new roots. In addition, the melons are not very drought tolerant and need to absorb a lot of water. As a result, a large number of farmers will be heavily watered once they are irrigated, which will cause the soil texture to become heavy and soil compaction, which will worsen the permeability of the soil, affect the gas exchange and absorption on the surface of the melon melon, weaken the root vitality, and hinder the roots to nutrients. Absorption and utilization of the roots affect the normal growth of roots, and there are no new roots. In this regard, it is recommended that farmers pay attention to whether the organic fertilizer has fully matured when applying basal fertilizer, and the interval between fertilization and planting should not be too close to reduce the use of chemical fertilizers. When watering, do not over-water at one time.
Third, melon root nematode disease is also one of the reasons for melon not long new roots.
It is mainly caused by root nematode infestation. When it is invaded, it pierces the root of the wax gourd with a needle, especially the young part of the root (root and lateral roots), stabs the cell wall of the root, and secretes saliva and enters saliva. After the root tissue will produce a chemical effect, stimulate the roots to grow abnormally. Roots will grow many nodules with different shapes and sizes, initially white, later become dark brown, these roots will make the roots unable to absorb water, affect the normal growth of roots, and then lead to melon not long new root.
The methods for preventing and controlling Melon root nematodes mainly include the following aspects. Farmers should comprehensively use them in order to obtain the best control effect.
1. Select disease-free soil seedlings, strengthen field management, and timely remove diseased roots.
2, increase the application of organic fertilizer to promote new root growth, enhance plant resistance to disease.
3. Ploughing the soil before planting, re-infested fields can be used for paddy-upland rotation.
4, in the melon before transplanting with Ligen sand granules ditch, acupuncture or all field application. If the wax gourd is harmed by the nematode during the growth period, use the root solution of sand water solution (Ligen sand water agent + strong root / root wizard) to water the root.
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