Five key measures for raising seedlings with Acupoint disk substrate

Hole-plate substrate seedling raising is a major technical innovation of vegetable seedlings, which overcomes the disadvantages of traditional nutrition bowl, such as low seedling rate, difficult to control seedling disease, high cost and large area of bed, and is welcomed by the majority of vegetable farmers.

Song Chunming, Guanlu Village, Daotian Town, Shouguang City, has rich experience in raising seedlings in the substrate of acupoints. Facing the high temperature in summer, Song Chunming said: "in order to cultivate uniform strong seedlings, we must do a good job in the following five links."

one。 According to the seedling preparation, the hole plate and substrate with suitable pore size should be selected.

The selection of acupoint dish should be determined according to the type of vegetables, seedling age and other factors. For example, sweet pepper uses 72 holes or 105 holes, tomatoes mostly use 105 holes, grafted seedlings use 50 holes, and so on. Before sowing, the acupoint disk should be disinfected first, which can be soaked in chlorpromazine solution or disinfected with potassium permanganate solution, especially the old acupoint plate should be disinfected.

The selection of substrate is an important link in seedling production. Many seedling factories and vegetable farmers cause slow seedling growth and yellow leaves because of the improper selection of substrate.

According to the requirements of PH value and nutrients of the root system of melon and vegetable at seedling stage, the suitable substrate should be selected, such as imported substrate or Luqing seedling substrate. And the matrix should be disinfected before loading into the acupoint plate, which can be treated with carbendazim, or mixed with anti-bacterial 968 Miaobao according to a certain proportion, and biological bacteria can be used to protect the normal growth of seedlings.

two。 It is necessary to pour enough bottom water to ensure that the whole seedling is sown.

Spray enough bottom water before sowing, pour through the substrate, when the bottom layer begins to see water, it can meet the requirements of sowing and sprouting, and can be combined with water spraying according to the disease in the seedling stage. If the bottom water is too much, it will reduce the bed temperature, and if the bottom water is insufficient, it will increase the difficulty of replenishing water to promote the whole seedling. After sowing, the seeds are covered with substrates according to the requirements of different crop cover depths, and then covered with plastic film for heat preservation and moisturization, so as to promote complete, whole and uniform seedlings.

three。 The film should be uncovered in time to prevent scalding seedlings.

When the emergence rate of pot seedlings reaches more than 50%, the plastic film should be removed in time to prevent the seedlings from being burned by high temperature and lack of water, so as to protect the whole seedlings and promote the growth of seedlings.

four。 It is necessary to strengthen management and improve the growing environment of seedlings.

Although it is simple and feasible to raise seedlings with hole plate substrate, it is still the focus of management in this period to use "two nets and one film" to cover seedlings in the high temperature and rainy season in summer.

Two nets, namely sunshade net and insect prevention net, and one film, that is, plastic film. Sunshade net can play a role in shading and cooling, anti-insect net can play a role in preventing pests from sneaking in, and film can play a role in rain prevention. What needs to be emphasized here is that the use of the sunshade net must be scientific and reasonable, and do not cover the seeds for a long time after emergence, so as not to cause poor seedling growth.

five。 Appropriate amount of water and fertilizer should be replenished to realize the transplanting of mature seedlings.

Point plate seedlings should pay attention to timely replenishment of water, the general substrate surface whitening when the need to replenish water. At the same time, according to the nutrient content of the substrate and the growth of seedlings, most of them use foliar fertilizer spraying method, combined with water supplement for appropriate nutrition. The control of diseases and insect pests is the same as that of normal seedlings. According to the seedling age and transplanting period, the suitable sowing time should be determined reasonably, and the scientific regulation should be carried out according to the transplanting leaf age standard, so as to prevent the excessive use of fertilizer from causing the seedling stage to grow excessively, so as to ensure the transplanting of strong seedlings of the right age.