Anti-season cultivation techniques of asparagus in greenhouse
The hybrid varieties with strong disease resistance and fast growth were selected, such as 2000-3 and Champion. The main way of sowing and raising seedlings is from February to April. Soak the seeds in 300x solution of 50% carbendazim wettable powder for 12 hours, then soak the seeds in 30-35 ℃ warm water for 2-3 days, remove the seeds, cover them with wet towels to accelerate germination, rinse the seeds twice a day, and sow 10% seeds after whitening. Prepare nutritious soil, make 10 cm square nutritious soil block, single seed on demand, cover 2 cm thick fine soil. The temperature in the arch film was controlled at 25: 30 ℃ in daytime, 15: 18 ℃ at night, and ventilated in time when the temperature exceeded 32 ℃. The seedlings grew more than 3 aboveground stems and were transplanted. Transplanting and planting in the east-west direction and planting in the north-south direction. (1) dig fixed planting ditch. In the deeply leveled ground, the north-south direction is drawn in a straight line with a line spacing of 120 cm, and the planting ditch is dug along the straight line, with a width of 40 cm and a depth of 40 cm to 50 cm. (2) fertilizing to fill the ditch. Fill the ditch with 5000 kg of soil fertilizer and 50 kg of ternary compound fertilizer per mu. (3) fine planting. The nutritious soil is planted in the ditch at a distance of 25 cm, the bulb disk of bamboo shoots is 13 cm below the ground level, and then watered to make it naturally firm.
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Management techniques of asparagus in summer and autumn
Asparagus is one of the highly efficient cash crops, which can be harvested for more than 10 years at one time. The annual harvest of bamboo shoots per mu is generally 2300 kg, and the output value per mu is up to 10,000 yuan. The key to its high-yield cultivation and management is as follows: first, to cultivate strong seedlings to capture the high yield of asparagus, in addition to selecting good varieties, it is also necessary to establish a nursery.
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Causes and control of a large number of dead plants of asparagus
The reasons for asparagus death are as follows: 1. Asparagus likes light. From September to October 2007, when the aboveground parts of asparagus grew vigorously and accumulated nutrients, laying the foundation for the next year's high yield, we suddenly encountered the continuous overcast and rainy weather that we had not seen for many years, resulting in a serious lack of light, resulting in stagnation of asparagus growth, decrease of nutrition accumulation and stress resistance.
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