How many times a year can strawberries be planted? What is the cause and prevention of abnormal fruit?

Strawberries, also known as pineapple strawberries, are widely cultivated in South America, China, Europe and other places. Strawberry has high nutritional value, contains a variety of nutrients, and has health care effect. How many times a year does the average strawberry plant bear fruit? What is the cause and prevention of abnormal fruit?

How many times a year can strawberries be planted?

1. Strawberries have a long fruiting period, but they don't bear fruit all the year round, with 6-8 months. In the southern subtropical region, it is usually planted in late September and early October, and the fruit matures after 50 days. It has been harvested at the end of the arrival of Rain Water in March of the following year, and 2 to 3 batches of fruits can be collected. The greenhouse in the central region is generally planted from late August to early September, and the fruit is ripe in about 90 days. It has been harvested in May of the following year, and 3 to 4 batches of fruit can be picked. In the northern region, it is generally planted from mid-August to late August, and the fruit is ripe in about 100 days. It has been harvested in June of the following year, and 4 to 5 batches of fruit can be harvested.

two。 Strawberries usually begin to germinate in late February, bloom in mid-April, and the fruit will not fully mature until mid-late May, that is to say, strawberries are the fruit of late spring and early summer. Strawberries will probably be available in May, but there are also some earlier ones that will be on the market in March or April. But it may be ripe, so it is not only not enough to know when strawberries are on the market, but also to know how to distinguish strawberries.

What are the causes and prevention of malformed fruits in strawberries generally planted?

The main causes of abnormal fruit in strawberries are as follows:

1. The phased ecological environment is not suitable for the growth and development of some strawberries.

two。 The technical links of cultivation and management are not in place, and the factors affected are temperature, light, moisture, fertilizer, pollination and so on, resulting in poor plant development of some strawberries. Too much nitrogen fertilizer, insufficient boron fertilizer, high temperature and drought. For example, when there is too much nitrogen fertilizer, such as too much nitrogen fertilizer and lack of boron at the flowering stage, the plant auxin content in the growth point increases, so that the growth point of the flower bud expands in a band before differentiation, and more than two flowers differentiate at the same time. As a result, 2-3 pedicels bloom at the same time to form cockscomb, double-headed or multi-headed fruits. For example, when boron fertilizer is insufficient, the flowers are small, the pollination is poor, and the fruit expands and shrinks at the same time. When dried at high temperature, the fruit is easily cracked and the pulp is exposed due to excessive watering. Insect pollination is inhibited, poor fertilization, easy to form crooked flat fruit.

Prevention and control methods:

1. The varieties with high fruiting rate were selected. All localities can choose according to local conditions.

two。 Scientific formula fertilization. In order to achieve the combination of organic fertilizer and inorganic fertilizer, it is especially necessary to apply appropriate proportion of phosphorus and potassium fertilizer. The rotten farm manure 4000kg / mu, superphosphate 40kg / mu, potassium sulfate 15kg / mu, boron 0.2 kg / mu, nitrogen, phosphorus and potassium compound fertilizer 30kg should be applied per mu of base fertilizer. After planting, compound fertilizer was applied every 20 days or so, 10 kg per mu, and once a month in the later stage. At the same time, Huimanfeng active liquid fertilizer and Suele boron were sprayed for 3 times.

3. Do a good job of relevant supporting measures. Selecting pesticides with high efficiency and low toxicity, strawberries are pollinated by insects. Sometimes, even in the temperature range suitable for pollination and fertilization, improper application kills pollinating insects, or the low content of nectar and sugar in flowers can not attract insects. Will affect pollination, fertilization and produce deformed fruit. Avoid the prevention and control of diseases and insect pests during flowering, remove abnormal young fruits with very abnormal shape, and often remove old leaves and ineffective axillary buds.

Time: 2019-04-08 Click: