Management of planting Loquat before picking

There was little rain last winter, and the growth and development of loquat fruit was relatively poor, so it is very important to do a good job of management before picking.

1. Fertilization

① combined with irrigation or after rain opened radiation ditch or intermittent annular ditch to apply N, K chemical fertilizer or rotten organic fertilizer.

② foliar topdressing: before bagging, 0.3% urea, 0.3% potassium dihydrogen phosphate and 0.2% calcium chloride solution are sprayed on the leaves every 10 to 15 days, or foliar fertilizers such as "Gaole" and "Handilong" are sprayed to supplement the nutrients needed for the development of young fruits in time.

2. Timely fruit thinning

Loquat is a kind of fruit tree with high fruit setting rate. Even if it has thinned flowers and spikes, it still has the problem of too much fruit. Fruit thinning can obviously increase the fruit, make the fruit size uniform, the ripening period consistent, improve the fruit quality and facilitate harvest. The time of fruit thinning should be earlier, which can reduce the consumption of nutrients. generally, when you can distinguish whether the fruit is good or bad, first fold off part of the excessive ears, then thinning the grains of diseases and insect pests, small fruits, deformed fruits and overdense fruits, and leave 3 grains per ear with similar size as far as possible.

3. Fruit bagging

Bagging can reduce the damage and mechanical injury of fruit by diseases and insect pests, obviously improve the finish of fruit surface and improve the appearance quality of fruit. The earlier the bagging time, the better the fruit coloring and the less rust spots on the fruit surface. Generally, it is appropriate to bag 30-35 days after flowering, spray once before bagging to control diseases and insect pests, and generally use a mixture of germicidal and insecticides. The size and thickness of the paper bag should be the same, generally choose 60?80g/m2 waterproof Kraft paper, Zaozhong No. 6 flower spike is small, paper bag specification can be smaller, Jiefang bell flower ear is larger, paper bag specification should be larger. It is advocated to use disposable special loquat fruit bag, which is not only sanitary, safe and economical, but also has the function of sterilization, insect repellent and fruit protection.

Bagging is carried out in the order of the upper part, the lower part, the inner chamber and then the periphery. When bagging, first open the paper bag so that the bag is fully bulged, the fruit is suspended in the middle of the paper bag, and the leaves are covered with 2-3 pieces in the paper bag. Pay attention to that the fruit can not touch the paper bag, the mouth of the bag is downward or outward, and then fasten it with wire or straw.

4. The trunk is painted white.

The trunk has not been painted white in winter, so it should be painted white in time. First scrape off the diseased skin of the branches and plug the holes caused by longicorn beetles, then whitening the tree trunk with 2 kg of quicklime plus 1 kg of stone-sulfur mixture or sulfur, 0.3 kg of salt, a small amount of vegetable oil and 10 kg of water.