Planting techniques of Bamboo and Willow

Bamboo willow is a kind of willow, which belongs to the genus Salix of the willow family, also known as American bamboo willow and fast-growing bamboo willow. it has a wide range of uses. it is an ideal tree species for industrial raw material forest, medium and small diameter wood cultivation, street trees, landscaping and farmland shelterbelt. It is divided into different strains according to different adaptation areas and characteristics. After many experiments, Bamboo Willow 3 has the widest adaptation and the best performance. let's take a look at the planting technology of bamboo willow.

Planting characteristics of Bamboo and Willow

1. Widely used: bamboo willow is an ideal tree species for industrial raw material forest, medium and small diameter wood cultivation, street trees, planting trees on four sides, landscaping and farmland shelterbelt. At the same time, bamboo and willow wood has good basic density, high natural whiteness, non-hollow and non-black, so it is a high-quality raw material for manufacturing fibreboard, Blockboard and plywood, and its pulp performance is superior to other fast-growing tree species such as poplar and eucalyptus.

2. Good rapid growth: under suitable site conditions, the rotation period of small diameter wood cultivated in bamboo willow industrial raw material forest is generally two years, medium diameter wood is three to four years, and large diameter wood is five to six years, which has high economic benefits and short investment recovery period.

3. High density: bamboo and willow large and medium diameter wood 110mm / mu and small diameter wood 500mm / mu, which can improve the economic benefit per unit land area and is the first choice for building industrial raw material forest.

4. Strong adaptability: bamboo willow can be tolerant to saline-alkali (can adapt to soil PH8.0~8.5, heavy saline-alkali area with 0.8% salt content), water-flooded (can still grow normally after two months of flooding), lake, beach and saline-alkali land can be planted, which expands the afforestation area, improves the land utilization rate, and reduces the afforestation cost.

Growth conditions of Bamboo and Willow

1. Light requirements: bamboo and willow branches all grow upward, the angle between lateral branches and trunk is small, the branches are uniform, and they are more resistant to close planting. The tree shape has higher photosynthetic efficiency than other willows, and grows rapidly in areas where the sun is not less than 1400 hours during the growing period.

2. Temperature conditions: whether bamboo willow can survive the winter safely does not depend on the extreme low temperature, but on the Lignification before defoliation, and the gradient from high temperature to low temperature before defoliation should not be too large. When the temperature in the south is higher than 35 ℃, if the temperature difference between day and night is less than 10 ℃, the phenomenon of thermal dormancy may occur. During this period, the seedling growth decreases, and the seedlings grow normally when the temperature difference between day and night is more than 10 ℃.

3. Water conditions: bamboo and willow have strong aerial roots and strong ability to withstand water flooding. Experiments in the Yangtze River basin show that bamboo willow can endure deep water flooding at the top for more than two months, or afforestation in shallow water does not die in the whole year, but its growth decreases. The bamboo willow grows rapidly when the soil moisture is moderate, but the growth potential is restrained when the soil moisture is below 40%. Under the condition of irrigation, the bamboo willow is irrigated in time when the soil moisture is below 30%, so as to ensure the normal and rapid growth of bamboo willow.

4. Soil demand: bamboo and willow prefer fertile soil, the soil organic matter content grows rapidly in the land with 2%-10% soil organic matter content, and the fastest growth rate is in sandy loam with soil porosity of 50%, air permeability and good water retention, followed by sand and clay. It can grow under the condition of salt content 8 ‰ below PH 8.5, and the growth under the same salt content depends on the content of nutrient elements in the plot.

Planting techniques of Bamboo and Willow

1. Watering irrigation: bamboo willow is sensitive to water, the plant grows slowly when lack of water, the leaves turn yellow and wilt, and even fall leaves and die, especially in the hot summer. The resistance of bamboo and willow is obviously weakened during long-term drought, and it is easy to be infected with diseases and insect pests. In spring drought areas, it is generally best to irrigate buds and leaves when they sprout, which lays a foundation for seedlings to take root and sprout. It should be irrigated in time during summer drought to ensure that the growth potential of seedlings should be brought into full play. When the groundwater level is too high and the soil water content is too high, the bamboo willow grows poorly due to the lack of oxygen in the root system, and the stagnant water in the forest should be eliminated in time in the case of continuous overcast and rain. When the seedlings turn to the preparation stage of overwintering, the water supply should be controlled to promote the Lignification of the seedlings, and the seedlings that stay in bed in winter should be watered with frozen water once after entering the dormant period.

2. Rational fertilization: the topdressing time of bamboo and willow should be arranged before the fast-growing period, at the beginning of fast-growing period and in the middle stage. The principle is to promote the early stage and control the later stage, and the topdressing of seedlings should not be too late, so as not to cause seedling growth, reduce the degree of Lignification, and is not conducive to overwintering. In general, fertilization can be combined with irrigation. June to September is the rapid growth period of bamboo and willow, the maximum period of seedling growth in the whole year, and the largest demand for water and fertilizer. Fertilization should look at whether there is soil moisture and precipitation, insufficient soil moisture, no matter how much fertilization, seedlings can not be absorbed, or even cause the phenomenon of burning seedlings, so fertilization to see water is very important.

3. Loosening soil and weeding: due to more watering times, bamboo and willow nursery often cause soil compactness, which affects the development of seedling root system. Ploughing loose soil can loosen soil, break consolidation and increase soil permeability, which is beneficial to root respiration. And loosening soil can cut off the capillaries of the soil and reduce water evaporation. Weeding has a great impact on the growth of young forests, which can not only prevent weeds from competing with seedlings for soil nutrients and moisture, but also increase the light effect and reduce the main damage of diseases and insect pests. Weeding in the nursery should implement the principle of "removing early, removing small, except", that is, it should be cleaned immediately after weeds germinate and unearthed, so as to prevent weeds from competing for soil nutrients and moisture. Herbicides must be careful to avoid drug damage.

4. Pruning and sprouting: bamboo willow generally does not prune in the nursery, because there are few lateral branches, but in order to increase the light transmission and ventilation of the nursery, a few lateral branches can be sprouted, which is beneficial to the height growth of seedlings.

5. pest control: bamboo willow will also encounter all kinds of diseases and insect pests in the process of growth and development, resulting in poor growth and plant death, so it is necessary to strengthen the prevention and control of diseases and insect pests in the nursery. The prevention and control of diseases and insect pests in the nursery should be based on prevention, prevention is more important than treatment, early treatment, small treatment, treatment policy, in the seedling stage can take turns spraying methyl thiophanate, carbendazim, chlorothalonil and other common fungicides for control, especially in the high temperature and rainy season.