Viola Liliaceae is widely cultivated throughout the country. It is rich in nutrients such as vitamins, minerals, carbohydrates and proteins.
Chive from the seed germination to flower bud differentiation, is the vegetative growth period, this period mainly for the growth of roots, stems, leaves, and divided into germination, seedling period, vegetative growth and overwinter dormancy period. From the beginning of flower buds to the development of mature seeds after pollination and fertilization, it is the reproductive growth period of leeks, and this period is divided into flower bud differentiation, bolting and flowering and seed development and maturation.
The required fertilizer laws of leeks are: the seedling stage growth and consumption of fertilizer is small, but the vegetative growth period, especially in the spring and autumn harvest season, the amount of growth and the amount of fertilizer required, a large number of fertilization should be staged. 2 to 4 years old leeks, strong growth, strong ability to deliver, high yield, the largest amount of fertilizer required, is the peak of fertilizer needs. The five-year-old leeks gradually enter the aging stage. To prevent premature aging, it is necessary to strengthen fertilization.
The fertilization technology of leeks: 1. Base fertilizer. Based on the application of organic fertilizers, Shih Tsing Phosphate phosphate potassium fertilizer 25 to 30 kg per acre. 2. Top dressing. Generally the top two fertilizers in the fall, the first Mu chase Tianji brand phosphorus nitrate potassium fertilizer 30 to 35 kg, the second Mu chase Tianji brand phosphorus nitrate potassium fertilizer 20 kg, while the winter before the application of organic fertilizer. Spring fertilization should be combined with organic fertilizer Mu chase Tianji brand phosphorus nitrate potassium fertilizer 20 to 30 kg, to facilitate the return of green, each harvest once, per acre topdressing Tianhui brand phosphorus nitrate potassium fertilizer 30 to 35 kg.
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