Planting method and time of Gendazhi

Soil preparation under rotation: it is not suitable for continuous cropping, but should be planted by rotation, and the former crops are better for soybean, corn and wheat, with 2000 kg of rotten barnyard manure and 20 kg of diammonium phosphate per mu. Planting time: in the first and middle of April, it can be planted by direct seeding and seedling transplanting. Scientific management: apply 8-10 kg urea per mu in the middle of growth. Disease control: after planting, Luheng No. 3 or No. 6 can be irrigated with 800-1000 times solution for 2-3 times.

First, rotation of land preparation

It is not suitable for continuous cropping, it needs to be planted by rotation, and the previous crops are better for soybeans, corn and wheats. due to the weak root system, the soil is required to be loose, and after the previous crop is harvested, the soil needs to be sunburned and frozen in time. Then in the first and middle of April, 2000 kg of mature barnyard manure and 20 kg of diammonium phosphate were applied to rake and level the soil.

Second, planting time

All parts of Shandong Province generally start planting in the first and middle of April, which can be planted by direct seeding and seedling transplanting, direct seeding can be strip sowing or on demand, the row spacing is about 30 cm, the soil cover is 2-3 cm, and the seed consumption per mu is 1.5-2 kg. Seedling transplanting can be carried out when the seedling height is 15-20 cm, which is beneficial to improve the germination rate. Soaking seeds before direct seeding, first soak the seeds with 50-55 ℃ warm water for 30 minutes. Soak in cold water for about 24 hours, then take it out to dry and plant.

III. Scientific management

It is necessary and time for the seedlings to grow up to 2-3 true leaves once, 4-6 leaves to fix the seedlings, and the plant spacing is 20-30 cm, which requires more watering in the growth stage, timely drainage in the rainy season to avoid waterlogging, weeding and loosening the soil in time, and applying 8-10 kg urea per mu in the middle of growth to promote its early development and fast growth.

IV. Prevention and control of diseases

The main results are as follows: 1. The disease of Gunda vegetables is relatively serious, and most of them will die suddenly when they grow up, so it should be planted when it grows to 12-15cm. After planting, Luheng No. 3 or No. 6 can be irrigated with 800-1000 times liquid for 2-3 times. At the same time, necessary trace elements need to be replenished. It is more economical and scientific to use liquid fertilizer to spray 2-3 times to the leaves. It is helpful to promote the growth of Gunda vegetable.

2. If there is a beaded lump in the root of Gendazhi with different sizes of soybeans, it is a root swelling disease. generally, if it is not prevented in time, it will wither and die, so it is necessary to use 1000-1500 times of Luheng No. 1 liquid and use a sprayer to remove the sprinkler and hit it in the root soil.

5. Harvest

It can be used for leaf stripping 30-40 days after planting, 3-5 leaves per plant and 4-5 leaves per plant to continue to grow. generally, the amount of leaf stripping should be determined according to the season and growth conditions. it can be harvested 4-5 times in the peak growing season from June to July, producing more than 4000 kg of fresh leaves per mu.

VI. Keep the seed

At the beginning of November, it is necessary to dig out and cut off the leaves by roots, dig holes and bury them to avoid frost injury. Planting was carried out at the beginning of April in the second year, with a row spacing of 35-45 cm. Seeds can be harvested in early July, generally producing 50-60 kg of seeds per mu.