How to carry out spring field management for jasmine? Detailed explanation of the key technical points

I. Prune appropriately early

From late February to mid-March, pruning appropriately early (along with the corresponding field management) can help jasmine plants enter the vegetative growth stage earlier, and before reaching the temperature suitable for flower bud formation (25°C), have a certain leaf area index to carry out photosynthesis and accumulate more nutrients, laying a good foundation for high yield and high quality of flower buds.

The pruning height must be kept at about 20-30 cm above the remaining stump, with heavy pruning for old plants and light pruning for young plants. For 1-2 year old or newly planted plants, they should also be cut back at about 20 cm above the ground to promote more low-position branches and create a high-yielding tree form. When pruning, care should be taken to also cut off weak and slender branches.

II. Thoroughly clean the field and control pests and diseases

There are many pests and diseases harming jasmine, and their main overwintering site is the branches and leaves of jasmine. After comprehensive pruning, also pay attention to inspection, cut off and remove plants with insect infestation or disease spots as well, and thoroughly clean the field. All pruned branches, especially dead branches and fallen leaves, should be swept out of the field, dried in the sun and burned. After fertilizing and earthing up, carry out one pre-flowering insecticide and disinfection treatment with lime sulfur mixture, and strive to reduce the base number of pest and disease sources.

III. Apply heavy base fertilizer

After pruning and cleaning the field, heavy base fertilizer should be applied immediately. The base fertilizer should mainly be farmyard manure, applying 1000-1500 kg per mu of composted pig and cattle mixed manure, crop straw, bran cakes, etc., together with an appropriate amount of superphosphate and potassium chloride or compound fertilizer. The base fertilizer should be applied in furrows 10-15 cm deep opened on the surface of the flower field beds, and after application, combined with cleaning the ditches and earthing up, cover it with soil.

IV. Clear the bed ditches and do a good job in drainage and irrigation

Jasmine is a crop that likes moisture, fears drought and avoids waterlogging. Keeping the field moist is necessary for the healthy growth of jasmine. After fertilizing, if dry ditches occur, carry out drainage work.