Yamanashi is widely distributed in Northeast China, North China, Northwest China and other regions. Yamanashi is mainly used for green viewing. In addition, Yamanashi is also used for grafting rootstocks, edible, medicinal and many other uses. Therefore, Yamanashi has certain economic value. With the rapid development of urban greening, the demand for Yamanashi is increasing. Therefore, many people have been attracted to start cultivating Yamanashi seedlings.
How to raise seedlings of Yamanashi, Yamanashi seedling technology:
First, the choice of nursery land
The choice of nursery land should be based on the living characteristics of Northeast Yamanashi, and choose loam or sandy loam with relatively fertile, moist soil, moderate pH and good drainage, and consider flat or easy to manage, easy to manage and easy to transport. The land with a gentle slope is used as a nursery.
Second, land preparation
The land preparation is mainly to turn the flat. That is: the depth of the ground in the fall, the depth of the ground is about 30cm. Fertilize in spring, level the ground, and make a bed. In the process of land preparation, fertilization into the bottom fertilizer, the base fertilizer is mainly farmyard manure, and the application amount is 5000g/bm2. The soil is then sterilized and a mixture of copper sulphate or ferrous sulphate and carbendazim can be used. After the nursery floor is finely leveled, the bed is made. The specifications of the bed are based on the topography. Generally, the bed length is not limited. The bed width is 110 cm, the bed height is 10 cm, and the walkway width is 40 cm. The bed surface should be leveled and compacted.
Third, seed treatment
Northeast Yamanashi should be treated with mixed sand and wet sand before sowing. Namely: the seeds were taken out 40 days before sowing, soaked in normal temperature water for 24 hours, and then mixed into wet river sand (seed and river sand were uniformly mixed at a volume ratio of 1:3), and the river sand humidity was maintained at a saturated water holding capacity. 60%, then, cold and wet treatment for 40 days (temperature to 5-10 ° C). Rapid germination was carried out 3 days before sowing, and 30% of the seeds were germinated to be sown.
Fourth, sowing
Sowing and seedling cultivation of Northeast Yamanashi can be carried out by using seeding or spreading. It is more suitable for the analysis from the perspective of adapting the growth of seedlings. The seeding rate is generally controlled at 70-90 g/bm2. After sowing, the seeds are covered with 1-1.5cm of soil in the seedbed path, and then covered with a thin layer of sawdust or river sand. Finally, the pressure is kept.
V. Field management
After sowing, the soil should be kept moist during the germination period of the seeds. Watering during seedlings is based on the principle of less pouring and pouring. After the seedlings grow up, the watering should be poured in one time according to the principle of a large number of small times. And timely do a good job of weeding loose soil, weeding in accordance with the principle of "except early, small, except". Generally, it should be carried out once a week or half a month. It can be mastered according to the characteristics of the climate. It can also be used in combination with the combination of the fruit and the catch. In the sunny day, the method of low-spraying (try not to spray the agent onto the seedlings) is used for weeding. At the same time, it is necessary to do a good job in the prevention and control of pests and diseases; after 20 days of seedling emergence (late June), the seedlings are fixed, and the density of seedlings kept on the seedbed is 150 plants/bm2. After the seedlings are fixed, the phosphorus and potassium fertilizers should be applied once (the organic fertilizer must be decomposed). After mid-July, the fertilization should be stopped, the soil moisture should be controlled, and the seedlings should be kept long and not lignified.
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