-
What are the propagation methods for growing Salvia miltiorrhiza (red sage)?
Seed propagation: Broadcast sowing is generally used, and sowing is best done from the year's Grain in Ear to Summer Solstice and from End of Heat to White Dew in the year the seeds are collected. The seedbed should be land with a slightly higher elevation, loose and fertile soil, and convenient watering. For raising seedlings in mountainous areas, it is best to choose a hillside slope at the foot of a mountain facing east or southeast as the seedbed, to reduce sun exposure and help seedling emergence. The seedbed should first be plowed, and decomposed human manure and urine used as base fertilizer. The soil should be broken up fine and made into high beds 1.3-1.66 m wide. Then the seeds are evenly broadcast shallowly on the bed surface; after sowing, press lightly once with the foot so the seeds adhere closely to the surface soil (no need to cover with soil), cover with a thin layer of wheat straw, and sprinkle water frequently to keep it moist. When the seedlings have 3-5 true leaves, thin them out if they are found to be too dense. The thinned seedlings can be temporarily planted elsewhere and cultivated. During this period, pay attention to watering and promptly apply 1-2 topdressings of dilute human manure and urine to promote seedling growth. The suitable time for transplanting is from late October to early November of the same year. Before transplanting, open holes on the prepared bed surface at a spacing of 25 cm × 25 cm, with the hole depth depending on the length of the seedling roots. Plant 1-2 plants per hole, with the planting depth such that the heart bud is slightly exposed; do not plant too deep, and do not let the root crown be exposed above the soil. After planting, cover with soil until the holes are level, press slightly firm, and water promptly to settle the roots. When Salvia miltiorrhiza is transplanted early, it takes root early, and by the time the cold winter arrives it has already survived, and it will green up early the following year; as far as possible, do not delay transplanting until the severe cold season.</p><p></p><p>Root division propagation:</p><p>Carry out from the Beginning of Spring to Awakening of Insects. Select robust new roots about 1 cm in diameter for planting. Before planting, first cut the roots into 5-7 cm long root segments. The planting density is 27 cm between rows and 20 cm between plants. Open furrows on the bed surface, place the root segments upright in the furrows, taking care not to place the upper and lower ends upside down, and after planting cover level with soil. Seedlings generally emerge after Grain Rain. With root division propagation, flowering is later, and it is difficult to harvest seeds in the same year, but the roots grow faster.</p><p>Division propagation:</p><p>From the Beginning of Winter to the Awakening of Insects of the following year, when harvesting home-grown Salvia miltiorrhiza (generally between the Winter Solstice and the Beginning of Spring), select robust, disease-free plants, cut off the thick roots for medicinal use, and use the roots thinner than a cigarette, together with the rhizome head and heart leaves, as planting stock for propagation. Wild Salvia miltiorrhiza can also be dug up and transplanted together with roots and seedlings. Large seedlings can be divided into 2-4 plants according to the natural growth conditions of the buds and roots, and then planted.</p><p>Cuttage:</p><p>Around Qingming, select thick, strong stems, cut them into sections with 2-3 nodes each, cut off part of the leaves, and insert them into the prepared bed, burying 6-10 cm in the soil, leaving the buds slightly exposed above the soil surface, press the soil firm, and water immediately. After that, spray water with a sprayer in the morning and evening to keep the bed surface moist.</p>
-
Detailed Explanation of Flowering Period Regulation Techniques for Mango Cultivation
Mangoes in Guangdong generally bloom around February each year. At this time, they often encounter the influence of cold air from the north moving south, with low temperatures, continuous rain, and high air humidity, causing anthers not to split open, stigma damage, and even flower panicle mildew and death, affecting that year's fruiting. According to expert
-
How to Regulate the Production Period in Mango Cultivation
Mango generally flowers around December to January and matures from May to July, which happens to coincide with the peak production season of many other fruits, causing prices to plummet and often leaving growers with nothing to show for their efforts. Conversely, in the off-season, prices rise due to low supply, but this makes consumers pay more
-
What are the control methods for the jujube rust mite?
Jujube trees are generally more common in the north and relatively rare in the south. For friends who grow jujube trees, the thing they fear most is the damage of pests. Once a jujube tree is attacked by pests, not only will the yield decrease, but the fruit produced will be bitten and damaged by insects, and in more serious cases it will
-
How to prune a peach tree? Master the correct peach tree pruning method
1. Trunk height: For a generally shaped tree, the trunk height is 30-50 cm; the specific height should be determined according to the variety, terrain, planting density, management method and the growth of the individual tree. For varieties with strong growth vigor, fertile soil and a wide branch spreading angle, the trunk can be set somewhat higher.
-
What are the key points to note in shaping and pruning peach trees
1. The general shaping principle is "shaped but not rigid, unshaped but not chaotic," "large branches bright and open, small branches bustling." Fewer large branches allow more small branches. The general pruning principle is "prefer light over heavy, combine heavy and light." "Small branches bustling" does not mean the more branches the better; generally after pruning the branch spacing is
-
How to manage pear trees during the dormant period? A full explanation of practical tips
The dormant period of pear trees is generally from December of the previous year to February of the following year. During this time, pear trees are in a state of natural or forced dormancy, and most pests and diseases are also in a dormant state. Cultivation measures Through winter pruning, improve the ventilation and light conditions of the tree canopy, regulate the pear tree root system
-
A Detailed Guide to Forage Grass Planting Techniques and Management Methods
Forage grass generally refers to grasses or other herbaceous plants used to feed livestock. Forage grass has strong regeneration capacity and can be harvested multiple times a year. It is rich in various trace elements and vitamins, thus becoming the first choice for raising livestock. The quality of forage grass varieties directly affects the economic
-
What conditions should an excellent sunflower variety meet?
It is generally believed that an excellent variety should have the following characteristics: ① High yield per unit area; ② High oil content in oil sunflower seeds. ③ Strong stress resistance; ④ Wide adaptability. However, when selecting and using hybrid seeds, the following points should also be noted. (1) Hybrid seed
-
Detailed Explanation of Key Early Spring Grape Management Techniques
Early spring management generally means doing five tasks well: 1. Clean the orchard thoroughly; combined with winter pruning, cut off pest-infested canes to reduce damage from anthracnose, black pox, cane blight, and pests overwintering on the canes. Cleaning the orchard thoroughly together with winter pruning, and completely removing diseased wood, diseased fruit, fallen leaves, and weeds from the trees and between the rows, has a marked effect on preventing white rot, black rot, downy mildew, brown spot, and other diseases.
条件筛选