Sowing methods of Walnut planting

   (1) in order to facilitate the grafting operation, the wide and narrow row method is often used to cultivate rootstock seedlings, with a wide row of 60 cm, a narrow row of 40 cm and a plant spacing of 15 cm. Those who only cultivate seedlings without grafting can be denser appropriately, with a row spacing of 20cm x 40cm.

   (2) before irrigation and sowing, it is necessary to irrigate once or sow seeds in rain. In drought and water shortage areas, ditches are generally opened first, and water is irrigated in the ditches, and then sown after the water seeps down.

   (3) generally uses the method of on-demand seeding for large walnut seeds. It is required that the seed suture line is perpendicular to the ground, and the seed tip (radicle, germ germination from then on) is parallel to the ground, so that the seedlings can be unearthed and grow healthily. In other placement methods, the seedlings were unearthed, the root neck was curved and the growth potential was weak.

The picture shows walnut

In the case of large one-time sowing rate,    can also be carried out by sowing potato mechanically, and there is almost no effect on germination when the seed quality is high.

   (4) generally speaking, the thickness of covering soil sown is 3 ~ 5 times of the diameter of seeds, 3 times for large seeds and 5 times for small seeds. The diameter of common walnut is 3 cm 4 cm, and the thickness of soil cover is 8 cm 12 cm. In arid areas, it can be thicker to preserve soil moisture, cover with plastic film can be shallower, and cover soil 5cm to 7cm is beneficial to seedling emergence.

   (5) plastic film mulching should generally be covered after sowing, which is beneficial to water conservation, soil moisture conservation, soil temperature increase and seed germination and growth. The seedlings should be cut and let out with a knife in time after they are unearthed. The method of covering plastic film first and then drilling holes on demand can also be used. Generally, waste flashlights or empty cans of almond dew beverages can be cut open and punched. Plastic film can also be replaced by rice straw, but the effect of preserving soil moisture is poor, the ground temperature is low, and it sprouts.

Generally speaking, the seeding rate of    is about 6700 walnut seedlings per mu, with a maximum of 8000 plants. Need 120 kg of large seeds (60 seeds / kg) or 70 kg of small and medium-sized seeds (11.00 seeds / kg) per mu. Before sowing, the required sowing amount is calculated according to the determined plant row spacing and seed size, and 5% ~ 10% more can be prepared when preparing seeds, so as to remove moldy and empty seeds, or to replant when a serious lack of plants is found after emergence.