The main reasons for the low yield of rapeseed

1. Several reasons for the low yield of rape:

1. Non-standard management

Because of the existence of market factors, including a lack of knowledge about the production of camellia, and insufficient capital investment, eventually came a long-term lack of management of the camellia oleifera forest, overgrown weeds, uneven distribution, almost in a semi-wasteful state, and very poor ventilation conditions Well, the damage caused by pests is very serious, and the yield of camellia is very low.

2. Lack of capital investment and technological services, lack of production base

Farmers cannot afford to invest in new varieties of Camellia oleifera and transform them at the same time. The government ’s support for the camellia industry is inadequate, there is no continuity, coupled with the lack of capital investment, the lack of scientific and technical guidance, and the lack of certain technical personnel In terms of the training of tea oil, the pace of transformation of low-yield camellia forest has been slowed down.

3. Random variety

The low-yield Camellia oleifera forests often use seeds for direct sowing, resulting in a low seedling rate and serious plant shortages. The long-term alienation pollination results in a very chaotic variety of Camellia oleifera forests. The proportion of inferior plants is relatively large, and the difference in plant yield Also great. The chaotic growth of Camellia oleifera varieties with large differences in flowering stage, fruit shape, and maturity stage often occurs in low-yield Camellia oleifera forest areas.

4. The aging phenomenon of the tree is serious

Because of the long-term lack of management, the tree body is generally weak, and the phenomenon of aging of the tree is also very obvious. The individual has entered the stage of aging in advance, the physiological function is reduced, and the ability of the root to absorb nutrients and the light and response of the leaves are constantly weakening. Without sufficient nutrients for the growth and development of plants, the production volume is significantly reduced, and the phenomenon of plant death is becoming more and more serious. Many lichens are attached to plants. The number of pests is increasing and the phenomenon of falling flowers and fruits is very serious.

The low yield of rapeseed is mainly due to these major reasons, farmers must know!

2. How to transform low-yield rape forest?

According to the actual situation of low-yield tea oil production forests, the forest structure should be improved and the land conditions should be improved in the first two situations. For the third forest area, the better land conditions should be selected. The forest land with development potential is used for the renewal of varieties, and the forest land of the fourth kind can be transformed into forests according to the requirements of classified output.

1. Improve soil conditions

(1) Repeated reclamation

Deep reclamation has a significant promotion effect on the growth and development of Camellia oleifera, and the output is greatly improved. In the first year of renovation, all the land should be reclaimed once, with a depth of about ten to twenty centimeters, and the next two to three years must be deep turned. When deep turning is carried out, it must be combined with organic fertilizers. Fertilize the canopy as required. Tillage is also carried out once a summer at a depth of about ten centimeters. Weeds are also removed during reclamation, the soil is loosened, and horizontal ladders are made to protect the soil, fertilizer, and water.

(2) Increase water and fertilize

One of the main reasons for the low-yield Camellia oleifera forest is the lack of fertilizers, combined with repeated reclamation, and then adding fertilizers can greatly increase the output of Camellia oleifera, mainly organic fertilizers in the old years, nitrogen fertilizers in the young years, mainly in autumn and winter It is organic fertilizer, and it is quick-acting fertilizer in spring and summer. Fertilize the forest land according to the requirements of fertilizers.

3. Strengthen the prevention of diseases and insect pests

Camellia oleifera is easily affected by diseases and insect pests. The prevention and control of diseases and insect pests must be strengthened, efforts should be made to improve the ecological environment, and biochemical control methods should be used to solve the problems of pests and diseases.

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